C program to print box number pattern with plus in center 11011 11011

Programming Example

C program to print box number pattern with plus in center

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Write a C program to print the given box number pattern of 1's and 0's with plus in center of the box using loop. How to print box number pattern with plus in center using for loop in C programming. Logic to print box number pattern with plus in center of the box in C program.

Program Code

/**
 * C program to print box number pattern with plus in center
 * www.atnyla.com
 */

#include <stdio.h>

int main()
{
    int rows, cols, i, j;
    int centerRow, centerCol;

    /* Input rows and columns from user */
    printf("Enter number of rows: ");
    scanf("%d", &rows);
    printf("Enter number of columns: ");
    scanf("%d", &cols);

    centerRow = (rows+1) / 2;
    centerCol = (cols+1) / 2;

    for(i=1; i<=rows; i++)
    {
        for(j=1; j<=cols; j++)
        {
            // Print 0 for central rows or columns
            if(centerCol == j || centerRow == i)
            {
                printf("0");
            }
            else if((cols%2 == 0 && centerCol+1 == j) || (rows%2 == 0 && centerRow+1 == i))
            {
                // Print an extra 0 for even rows or columns
                printf("0");
            }
            else
            {
                printf("1");
            }
        }

        printf("\n");
    }

    return 0;
}
Output

Output

Enter number of rows: 5
Enter number of columns: 5
11011
11011
00000
11011
11011

Explanation

Required knowledge

Basic C programming, Loop

Logic to print box number pattern with plus in center

Before I get to formal descriptive logic of the pattern, have a close look at the given pattern. You will notice that 0 is printed for central columns or rows i.e. 0 is printed for all cols / 2 and rows / 2.
Below is the step by step descriptive logic to print the given number pattern.

Input number of rows and columns to print from user. Store it in some variable say rows and cols.
To iterate through rows run an outer loop from 1 to rows. The loop structure should look like for(i=1; i<=rows; i++).
To iterate though columns run an inner loop from 1 to cols. The loop structure should look like for(j=1; j<=cols; j++).
We already know that 0 is printed only for central rows and columns otherwise 1 is printed. Hence, if(i == rows/2 || j == cols/2), then print 0 otherwise print 1.
Finally, move to the next line after printing all columns of a row.

How to learn from this program

First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.

Practice suggestion

After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.

C program to print box number pattern with plus in center
11011 11011 00000 11011 11011

Program Code

Output

Explanation

Required knowledge

Logic to print box number pattern with plus in center

How to learn from this program

Practice suggestion

Quick Practice Flow

Related Programs

C program to print box number pattern with plus in center 11011 11011 00000 11011 11011

Program Code

Output

Explanation

Required knowledge

Logic to print box number pattern with plus in center

How to learn from this program

Practice suggestion

Quick Practice Flow

Related Programs

C program to print box number pattern with plus in center
11011 11011 00000 11011 11011