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Introduction to C Programming Language
1
About C tutorial
2
Important points about C
3
Why Use C
4
Applications of C
5
C Language and English Language
6
Features of C
7
C, C++ and Java
Fundamentals and Basic Building Blocks of C Programming Language
1
First Program in C Hello World
2
Basic Structure of C Programming
3
Tokens in C
4
Keywords in C
5
Identifiers in C
6
Format Specifiers
7
Format Specifiers Examples
8
History of C
Data Types in C Language
1
int Data Type in C
2
float Data Type in C
3
double Data Type in C
4
char Data Type in C
Variable in C Language
1
Variable Introduction in C
2
Variable Declaration and Initialization
3
Variable types and Scope in C
4
Local Variable in C
5
static Variable in C
6
Global variables in C
7
Storage Class in C
Constant in C Language
1
Constants in C
Operators and Enums in C Language
1
Introduction to Operator in C
2
Arithmetic Operators in C
3
Relational Operators in C
4
Bit-wise Operators in C
5
Logical Operators in C
6
Assignment Operators in C
7
Conditional Operator in C
8
sizeof() Operator in C
9
Operator Precedance in C language
10
ASCII Value
Decision Making of C Language
1
Decision Making in C Introduction
2
if Statement in C Programming Language
3
if-else Statement
4
Nested if Statement
5
if else if Ladder
6
switch case in C
Loop control in C Language
1
Loop Introduction in C Language
2
While Loop in C Language
3
Do While Loop in C Language
4
For Loop in C Language
Control Flow in C Programming Language
1
break Statement in C
2
continue Statement in C
3
goto Statement in C
Array in C Language
1
Single Dimensional Array
2
Multi-Dimensional Array in C
3
Limitations of Arrays
String in C Language
1
Introduction to String
Function in C Language
1
Function in C
2
Function Calling in C
3
return type in Function
4
Call by Value in C
5
User Define Function
6
Predefined Functions
String functions in C
1
All String Functions
2
strcat() function
3
strncat() function
4
strcpy() function
5
strncpy() function
6
strlen() function
7
strcmp() function
8
strcmpi() function
9
strchr() function
10
strrchr() function
11
strstr() function
12
strrstr() function
13
strdup() function
14
strlwr() function
15
strupr() function
16
strrev() function
17
strset() function
18
strnset() function
19
strtok() function
Recursion in c
1
Introduction to Recursion
2
Direct and Indirect Recursion
Pointer in C Language
1
Pointer in C
2
types of pointer
3
NULL pointer
4
Dangling Pointer
5
Void/Generic Pointers
6
Wild Pointer
7
Near, Far and Huge Pointer
8
Pointer Expressions and Arithmetic
9
Pointer and Array
10
Strings as pointers
11
Pointer to Function
12
Call by Reference in C
Structure in C Language
1
Structure in C
2
Nested Structure in C
3
Array of Structures in C
4
Pointer to Structure
5
Structure to Function in C
6
typedef in C
7
typedef vs #define in C
Union in C Language
1
Union in C
File Input/Output
1
Introduction to File
2
File Operation in c
Dynamic Memory Allocation
1
Introduction to DMA
2
calloc() and free()
3
realloc() and free() function
C Pre-processor
1
Introduction about Pre-processor
Command Line Arguments
1
Introduction CLAs
C Programming Language MCQ
1
Overview Of C Language
2
Fundamentals of C Language
3
Data Types in C Language
4
Variable in C Language
5
Constant in C Language
6
Operators and Enums in C Language
7
String in C Language
8
Decision Making of C Language
9
C Language Loop Control
10
Function in C Language
11
Structure in C Language
12
Union in C Language
13
File Input/Output in C Language
14
Array in C Language
15
Pointer in C Language
16
C Language Pre-Processor
17
Dynamic Memory Allocation in C Language
Interview Questions C Language
1
C Language Interview Questions
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C Language Interview Questions
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August 03, 2026
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Related Questions
Question 1
Differentiate Source Codes from Object Codes
Question 2
What is the significance of an algorithm to C programming?
Question 3
Is it possible to create your own header files?
Question 4
What is C language?
Question 5
Who developed C language?
Question 6
Describe about history of C programming language.
Question 7
Who is the founder of C language?
Question 8
What are the different file extensions involved when programming in C?
Question 9
Where is C programming language used or uses of C language?
Question 10
What is the difference between top down approach and bottom up approach in programming languages?
Question 11
C language has been developed in which language?
Question 12
Which year C language is developed?
Question 13
What is meant by programming language and give some examples?
Question 14
Describe about C standards.
Question 15
What is embedded C?
Question 16
What is the difference between structured oriented, object-oriented and non-structure oriented programming language?
Question 17
What is meant by protocol?
Question 18
List out some of C compilers.
Question 19
Is C language case sensitive?
Question 20
Why is C known as a mother language?
Question 21
Why is C called a mid-level programming language?
Question 22
What is command line argument?
Question 23
What is the acronym for ANSI?
Question 24
Who is the main contributor in designing the C language after Dennis Ritchie?
Question 25
Why is C considered a foundational programming language?
Question 26
What makes C faster compared to other languages?
Question 27
Why is C still used today even after the rise of modern languages?
Question 28
How does learning C help in understanding computer memory?
Question 29
Why is C often called a middle-level language?
Question 30
What are some popular applications built using C?
Question 31
Why is C preferred for system-level programming?
Question 32
How does C give programmers better control over hardware?
Question 33
Why is C commonly used in embedded systems?
Question 34
What makes C suitable for writing operating systems?
Question 35
How does C help programmers understand how compilers and memory management work?
Question 36
What advantages does C provide in terms of performance and optimization?
Question 37
Why is C used for building compilers and interpreters?
Question 38
Why do modern languages have components written in C?
Question 39
How does pointer usage in C give an advantage?
Question 40
How does C allow fine-grained control over memory allocation?
Question 41
Why do developers prefer C for creating high-performance libraries?
Question 42
How does C influence the design of modern programming languages?
Question 43
Why is C favored in industries like robotics, IoT, and automotive?
Question 44
How does the portability of C programs contribute to its relevance?
Question 45
Why is C used for real-time system development?
Question 46
Explain how C supports low-level operations better than high-level languages.
Question 47
Why choose C over Python or Java for microcontroller firmware?
Question 48
Your project requires maximum speed and minimal memory consumption. How does C help?
Question 49
You need to interact with hardware registers. Why use C?
Question 50
When would C NOT be the best choice?
Question 51
How does learning C make it easier to learn other programming languages?
Question 52
Why did you choose to learn C programming?
Question 53
How has learning C improved your problem-solving skills?
Question 54
What is one advantage of C that will keep it relevant for the next 20 years?
Question 55
Which level is C language belonging to?
Question 56
What do you mean by high level, middle level and low level languages and give an example for each?
Question 57
What is a compiler?
Question 58
What is the difference between assembler, compiler and interpreter?
Question 59
Why is C language being considered a middle level language?
Question 60
What are the key features of C language or what are the characteristics of C language?
Question 61
What are the features of the C language?
Question 62
What is the difference between C and C++?
Question 63
What is the difference between C and Java?
Question 64
What are main characteristics of C language?
Question 65
What is printf()?
Question 66
What is scanf()?
Question 67
Execution of a C program starts from which function?
Question 68
What is IDE?
Question 69
What is header file in C language?
Question 70
What is void in C?
Question 71
What is the syntax for comments in C?
Question 72
What is the difference between getch() and getche()?
Question 73
Write a program to print hello world
Question 74
Which compiler switch to be used for compiling the programs using math library with gcc compiler?
Question 75
Can the curly brackets { } be used to enclose a single line of code?
Question 76
What are header files and what are its uses in C programming?
Question 77
What is syntax error?
Question 78
Can two or more operators such as and be combined in a single line of program code?
Question 79
Why is it that not all header files are declared in every C program?
Question 80
What are compound statements?
Question 81
What is wrong in this statement? scanf("%d",whatnumber);
Question 82
What are comments and how do you insert it in a C program?
Question 83
What are reserved words?
Question 84
Not all reserved words are written in lowercase. TRUE or FALSE?
Question 85
What are run-time errors?
Question 86
What is the difference between functions abs() and fabs()?
Question 87
What is the general form of a C program?
Question 88
What is the use of a semicolon (;) at the end of every program statement?
Question 89
What are all the sections that a C program may have and must have?
Question 90
What is the use of printf() and scanf() functions?
Question 91
Can we compile a program without main() function?
Question 92
What is a token?
Question 93
What is token in C?
Question 94
What are the types of C tokens?
Question 95
What is a token?
Question 96
What is the newline escape sequence?
Question 97
What is the purpose of the keyword typedef?
Question 98
Which key word is used to perform unconditional branching?
Question 99
When is the "void" keyword used in a function?
Question 100
What is Standard Header Files ?
Question 101
What is keyword in C?
Question 102
List out some keywords available in C language.
Question 103
What is the maximum length of an identifier?
Question 104
What is identifier in C?
Question 105
What are format specifiers in C?
Question 106
What are Format Specifiers in C and why are they important?
Question 107
What is the syntax and structure of Format Specifiers in C?
Question 108
What are the most commonly used Format Specifiers in C?
Question 109
How are Format Specifiers used in printf() function?
Question 110
How are Format Specifiers used in scanf() function?
Question 111
Describe the history of C programming language.
Question 112
When was C language developed?
Question 113
Can I use "int" data type to store the value 32768? Why?
Question 114
Where is the auto variables stored?
Question 115
Can we specify variable field width in a scanf() format string? If possible how?
Question 116
What are global variables and how do you declare them?
Question 117
What is Variable Declaration ?
Question 118
What is variable in C?
Question 119
What is the difference between constant and variable in C?
Question 120
Can variable name start with numbers?
Question 121
What is the difference between variable declaration and variable definition in C?
Question 122
What are the different types of variable in C?
Question 123
Invalid Variable Names and Reasons
Question 124
Errors in C Statements
Question 125
What is the difference between variable declaration and variable definition? ( in a line)
Question 126
What is variable initialization and why is it important?
Question 127
What is wrong with this program statement? void = 10;
Question 128
Is this program statement valid? INT = 10.50;
Question 129
Where an automatic variable is stored?
Question 130
What is Blocks and Scope in c ?
Question 131
What is Variable Storage Classes?
Question 132
What is local variable in C?
Question 133
What does static variable mean?
Question 134
What is the use of a static variable in C?
Question 135
What is static memory allocation?
Question 136
What is an auto keyword in C?
Question 137
What is global variable in C?
Question 138
What is the difference between the local variable and global variable in C?
Question 139
What is storage class? What are the different storage classes in C?
Question 140
What is environment variable in C?
Question 141
What is the difference between auto variable and register variable in C?
Question 142
What is the difference between auto variable and static variable in C?
Question 143
What is lvalue and rvalue?
Question 144
What are variables and it what way is it different from constants?
Question 145
What is constant in C?
Question 146
What are the types of constants in C?
Question 147
What is the difference between a variable and a constant in C programming?
Question 148
What are enumerations?
Question 149
Explain the use of comma operator (,).
Question 150
Describe the order of precedence with regards to operators in C.
Question 151
What are enumerated types?
Question 152
What is enum in C?
Question 153
What is operator in C?
Question 154
What are the different types of operator in C?
Question 155
What is & and * operators in C?
Question 156
What value will be assigned to the variable X if a = 10, b = 20, c = 30, d = 40 for the expression X = a/b+c*d-c?
Question 157
What is the value assigned to the following variables? int X1 = 13/3; int X2 = 13%3;
Question 158
Evaluation of Expressions and Hierarchy
Question 159
Conversion of Equations into C Statements
Question 160
S++ or S = S+1, which can be recommended to increment the value by 1 and why?
Question 161
Where the address of operator (&) cannot be used for?
Question 162
What is reminder for 5.0 % 2?
Question 163
How do you construct an increment statement or decrement statement in C?
Question 164
What is the modulus operator?
Question 165
What is arithmetic operator in C?
Question 166
What is the difference between the expression "++a" and "a++"?
Question 167
What is the relational operator in C?
Question 168
What does the && operator do in a program code?
Question 169
What is the bitwise operator in C?
Question 170
What is || operator and how does it function in a program?
Question 171
What is the logical operator in C?
Question 172
What is the difference between the = symbol and == symbol?
Question 173
What is assignment operator in C?
Question 174
What is the difference between pre increment operator and post increment operator?
Question 175
What is the difference between pre decrement operator and post decrement operator?
Question 176
How many operators are there under the category of ternary operators?
Question 177
What is the use of a ? character?
Question 178
Which of the following operators is incorrect and why? ( >=, <=, <>, ==)
Question 179
What is the syntax for ternary operator in C?
Question 180
What is the use of sizeof() function in C?
Question 181
What are all decision control statements in C?
Question 182
How will you print numbers from 1 to 100 without using a loop?
Question 183
What is an endless loop?
Question 184
What are all loop control statements in C?
Question 185
What is an infinite loop?
Question 186
What is the difference between while and do-while loops in C and Java?
Question 187
Differentiate between for loop and a while loop? What are its uses?
Question 188
Explain the syntax for for loop.
Question 189
What is a nested loop?
Question 190
Write a loop statement that will show the following output:112123123412345
Question 191
What are the different types of control structures in programming?
Question 192
What is the use of goto statement?
Question 193
What is the meaning of base address of the array?
Question 194
How do you access the values within an array?
Question 195
What is the advantage of an array over individual variables?
Question 196
Describe how arrays can be passed to a user defined function
Question 197
What is the right way to Initialize array?
Question 198
Can array subscripts have negative value in C?
Question 199
What is an array in C?
Question 200
Difference between arrays and linked list?
Question 201
What are multidimensional arrays?
Question 202
How do you declare a variable that will hold string values?
Question 203
What is wrong with this statement? myName = "Nurujjaman";
Question 204
How do you determine the length of a string value that was stored in a variable?
Question 205
How do you convert strings to numbers in C?
Question 206
What is the difference between memcpy() and memmove() functions in C?
Question 207
What is the difference between strcpy() and strncpy() functions in C?
Question 208
What is the difference between array and string in C?
Question 209
Explain the use of %i format specifier w.r.t scanf().
Question 210
How can you print a (backslash) using any of the printf() family of functions.
Question 211
What is a static function?
Question 212
How do you generate random numbers in C?
Question 213
What could possibly be the problem if a valid function name such as tolower() is being reported by the C compiler as undefined?
Question 214
What are actual arguments?
Question 215
What does the function toupper() do?
Question 216
Is it possible to have a function as a parameter in another function?
Question 217
What is the difference between functions getch() and getche()?
Question 218
Can you pass an entire structure to functions?
Question 219
What is gets() function?
Question 220
How do you search data in a data file using random access method?
Question 221
Is there a built-in function in C that can be used for sorting data?
Question 222
What is the use of the function in C?
Question 223
What is function prototype?
Question 224
What are static functions? What is their use?
Question 225
What are the different ways of passing parameters to the functions? Which to use when?
Question 226
What is the difference between Call by Value and Call by Reference? C Language
Question 227
Example of call by value in C Program
Question 228
Out of fgets() and gets() which function is safe to use and why?
Question 229
Difference between strdup and strcpy?
Question 230
Where should type cast function not be used in C?
Question 231
What is static function in C?
Question 232
If you want to execute C program even after main function is terminated, which function can be used?
Question 233
Is it possible to call atexit() function more than once in a C program?
Question 234
What is exit() function in C?
Question 235
What is the difference between exit() and return() in C?
Question 236
Is there any inbuilt library function in C to remove leading and trailing spaces from a string? How will you remove them in C?
Question 237
What is the difference between Strings and Arrays?
Question 238
What are command line arguments?
Question 239
What is the difference between memcpy() and strcpy() functions in C?
Question 240
Which function in C can be used to append a string to another string?
Question 241
What is the purpose of built-in stricmp() function.
Question 242
What is recursion?
Question 243
What is recursion in C?
Question 244
What is a dangling pointer? in one line
Question 245
What is a NULL statement?
Question 246
What are pointers?
Question 247
What is file pointer in C?
Question 248
When can void pointer and null pointer be used in C?
Question 249
What is const pointer in C?
Question 250
What is the usage of the pointer in C?
Question 251
What is pointer to pointer in C?
Question 252
What is Dangling pointer?
Question 253
What is a pointer to a function? Give the general syntax for the same.
Question 254
What is the advantage of declaring void pointers?
Question 255
When to user -> (arrow) operator.
Question 256
What is the difference between call by value and call by reference in C?
Question 257
Example of call by reference in C Program
Question 258
What is a self-referential structure?
Question 259
What are bit fields?
Question 260
What are structure types in C?
Question 261
What is the structure?
Question 262
What are the differences between structures and arrays?
Question 263
What is the use of typedef?
Question 264
What is a union?
Question 265
What are the differences between structures and union?
Question 266
What the advantages of using Unions?
Question 267
What is a union?
Question 268
Explain the purpose of the function sprintf().
Question 269
Describe the file opening mode "w+".
Question 270
Are comments included during the compilation stage and placed in the EXE file as well?
Question 271
Is FILE a built-in data type?
Question 272
What is a sequential access file?
Question 273
What does the characters "r" and "w" mean when writing programs that will make use of files?
Question 274
What is the difference between text files and binary files?
Question 275
What is the advantage of a random access file?
Question 276
What is the purpose of sprintf() function?
Question 277
What are the functions to open and close the file in C language?
Question 278
What are macros? What are its advantages and disadvantages?
Question 279
What is dynamic memory allocation?
Question 280
What functions are used for dynamic memory allocation in C language?
Question 281
Distinguish between malloc() and calloc() memory allocation.
Question 282
What is the difference between malloc() and calloc()?
Question 283
What is a preprocessor?
Question 284
How will you print
Question 285
What is Macro? Why do we use the macro?
Question 286
What is the use of #define in C?
Question 287
What is ## operator in C?
Question 288
What is pragma in C? Or how will you execute functions before and after main function in C program?
Question 289
How will you override an existing macro in C?
Question 290
How to check whether macro is defined or not in a C program?