C program to print box number pattern with 1 and 0

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

Example:
Input rows: 5
Input columns: 5
Output:

Required knowledge

Basic C programming, Loop

Logic to print box number pattern

Before moving on to this number pattern I highly recommend you to go through some previous number pattern to get yourself familiar about printing number patterns.

Now, talking about this pattern if you look carefully to this pattern you will see that 1's are printed in below two conditions:
  1. 1's are printed for each column for the first and last row.
  2. 1's are printed at the start and end of each column.
From these conditions one can easily formulate the program of this number pattern. As before printing inside the inner loop you need to check two conditions i.e. if its the first or last row or its the first or last column then print 1 otherwise 0.

Program to print box number pattern of 1's and 0's

/**
 * C program to print box number pattern of 1's and 0's
 */

#include <stdio.h>

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

    /*
     * Reads number of rows, columns to be printed
     */
    printf("Enter number of rows: ");
    scanf("%d", &rows);
    printf("Enter number of columns: ");
    scanf("%d", &cols);

    for(i=1; i<=rows; i++)
    {
        for(j=1; j<=cols; j++)
        {
            //Print 1 if its first or last row
            //Print 1 if its first or last column
            if(i==1 || i==rows || j==1 || j==cols)
            {
                printf("1");
            }
            else
            {
                printf("0");
            }
        }

        printf("\n");
    }

    return 0;
}


Output
Enter number of rows: 5
Enter number of columns: 5
11111
10001
10001
10001
11111


Note: You can also reverse the given number pattern with 0's as border and 1's at the center. For that you just need to swap the inner two printf("1"); with printf("0"); statement.


Screenshot

C program to print box number pattern


Now you can twist with this program to generate this pattern. To print above pattern you just need to change single line in the above program. You just need to replace the inner printf("0"); with printf(" ");.

Program to print box number pattern

/**
 * C program to print box number pattern of 1's and 0's
 */

#include <stdio.h>

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

    /*
     * Reads number of rows, columns to be printed
     */
    printf("Enter number of rows: ");
    scanf("%d", &rows);
    printf("Enter number of columns: ");
    scanf("%d", &cols);

    for(i=1; i<=rows; i++)
    {
        for(j=1; j<=cols; j++)
        {
            //Print 1 if its first or last row
            //Print 1 if its first or last column
            if(i==1 || i==rows || j==1 || j==cols)
            {
                printf("1");
            }
            else
            {
                printf(" ");
            }
        }

        printf("\n");
    }

    return 0;
}


Screenshot

C program to print box number pattern


Happy coding ;)


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