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Errors in C Statements

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Question

Point out the errors, if any, in the following C statements and write the correct statements.

(a) int = 314.562 * 150 ; (b) name = ‘Ajay’ ; (c) varchar = ‘3’ ; (d) 3.14 * r * r * h = vol_of_cyl ; (e) k = ( a * b ) ( c + ( 2.5a + b ) ( d + e ) ; (f) m_inst = rate of interest * amount in rs ; (g) si = principal * rateofinterest * numberofyears / 100 ; (h) area = 3.14 * r ** 2 ; (i) volume = 3.14 * r ^ 2 * h ; (j) k = ( (a * b ) + c ) ( 2.5 * a + b ) ; (k) a = b = 3 = 4 ; (l) count = count + 1 ; (m) date = '2 Mar 04' ;

Solution

Statement	Error Reason	Correct Statement
(a) int = 314.562 * 150 ;	int is a keyword and cannot be used as a variable name.	result = 314.562 * 150 ;
(b) name = ‘Ajay’ ;	Strings must be enclosed within double quotation marks (" ").	name = "Ajay" ;
(c) varchar = ‘3’ ;	If varchar is an integer variable, single quotes should not be used.	varchar = 3 ;
(d) 3.14 * r * r * h = vol_of_cyl ;	The left side of assignment operator (=) must be a variable.	vol_of_cyl = 3.14 * r * r * h ;
(e) k = ( a * b ) ( c + ( 2.5a + b ) ( d + e ) ;	Multiplication operators (*) are missing and brackets are incorrect.	k = (a * b) * (c + (2.5 * a + b) * (d + e)) ;
(f) m_inst = rate of interest * amount in rs ;	Variable names cannot contain spaces.	m_inst = rate_of_interest * amount_in_rs ;
(g) si = principal * rateofinterest * numberofyears / 100 ;	There is no syntax error in this statement.	si = principal * rateofinterest * numberofyears / 100 ;
(h) area = 3.14 * r ** 2 ;	C language does not support the exponent operator (**).	area = 3.14 * r * r ;
(i) volume = 3.14 * r ^ 2 * h ;	The ^ operator is a bitwise XOR operator, not a power operator.	volume = 3.14 * r * r * h ;
(j) k = ( (a * b ) + c ) ( 2.5 * a + b ) ;	Multiplication operator (*) is missing between brackets.	k = ((a * b) + c) * (2.5 * a + b) ;
(k) a = b = 3 = 4 ;	Assignment cannot be made to a constant value.	a = b = 3 ;
(l) count = count + 1 ;	There is no error in this statement.	count = count + 1 ;
(m) date = '2 Mar 04' ;	Multiple characters cannot be enclosed within single quotes.	date = "2 Mar 04" ;

Statement

Error Reason

Correct Statement

(a) int = 314.562 * 150 ;

int is a keyword and cannot be used as a variable name.

result = 314.562 * 150 ;

(b) name = ‘Ajay’ ;

Strings must be enclosed within double quotation marks (" ").

name = "Ajay" ;

If varchar is an integer variable, single quotes should not be used.

varchar = 3 ;

(d) 3.14 * r * r * h = vol_of_cyl ;

The left side of assignment operator (=) must be a variable.

vol_of_cyl = 3.14 * r * r * h ;

(e) k = ( a * b ) ( c + ( 2.5a + b ) ( d + e ) ;

Multiplication operators (*) are missing and brackets are incorrect.

k = (a * b) * (c + (2.5 * a + b) * (d + e)) ;

(f) m_inst = rate of interest * amount in rs ;

Variable names cannot contain spaces.

m_inst = rate_of_interest * amount_in_rs ;

(g) si = principal * rateofinterest * numberofyears / 100 ;

There is no syntax error in this statement.

si = principal * rateofinterest * numberofyears / 100 ;

(h) area = 3.14 * r ** 2 ;

C language does not support the exponent operator (**).

area = 3.14 * r * r ;

(i) volume = 3.14 * r ^ 2 * h ;

The ^ operator is a bitwise XOR operator, not a power operator.

volume = 3.14 * r * r * h ;

(j) k = ( (a * b ) + c ) ( 2.5 * a + b ) ;

Multiplication operator (*) is missing between brackets.

k = ((a * b) + c) * (2.5 * a + b) ;

(k) a = b = 3 = 4 ;

Assignment cannot be made to a constant value.

a = b = 3 ;

(l) count = count + 1 ;

There is no error in this statement.

count = count + 1 ;

(m) date = '2 Mar 04' ;

Multiple characters cannot be enclosed within single quotes.

date = "2 Mar 04" ;

Example Program

#include int main() { float r = 5, h = 10; float volume, area; area = 3.14 * r * r; volume = 3.14 * r * r * h; printf("Area = %.2f\n", area); printf("Volume = %.2f\n", volume); int count = 0; count = count + 1; printf("Count = %d\n", count); return 0; }

Errors in C Statements

Answer with Explanation