C program to print circle box number pattern with 1 and 0

Write a C program to print the given circle number pattern with 1's and 0's. How to print circle number pattern of one's and zero's using for loop in C programming. Logic to print the box number pattern with 1 as border and 0 in center and corners.

Example

Input

Input rows: 5
Input cols: 5

Output

01110
10001
10001
10001
01110

Required knowledge

Basic C programming, Loop

Logic to print circle box number pattern

The given pattern is almost similar to one of previous explained pattern -

The only difference is zero gets printed for corner elements instead of 1.
Below is the step by step descriptive logic to print the given pattern.

  1. Input number of rows and columns to print from user. Store it in some variable say rows and cols.
  2. To iterate through rows run an outer loop from 1 to rows. The loop structure should look like for(i=1; i<=rows; i++).
  3. To iterate though columns run an inner loop from 1 to cols. The loop structure should look like for(j=1; j<=cols; j++).
  4. Inside the inner loop, print 1 for edges except for corner elements. Which is if(i==1 || i==rows || j==1 || j==rows) and not a corner then print 1 otherwise print 0.
  5. Finally, move to the next line after printing all columns of a row.

Program to print circle box number pattern

/**
 * C program to print circle box number pattern
 */

#include <stdio.h>

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

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

    for(i=1; i<=rows; i++)
    {
        for(j=1; j<=cols; j++)
        {
            // Print corner element
            if((i==1 || i==rows) && (j==1 || j==cols))
            {
                printf("0");
            }
            else if(i==1 || i==rows || j==1 || j==cols)
            {
                // Print edge
                printf("1");
            }
            else
            {
                // Print center
                printf("0");
            }
        }

        printf("\n");
    }

    return 0;
}

Output

Enter rows: 5
Enter columns: 5
01110
10001
10001
10001
01110

Now once you are done with the above pattern you can easily play with the inner printf(); statements to get following cool patterns of 0's and 1's.

Happy coding 😉

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