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
Input rows: 5 Input columns: 5
Output
11111 10001 10001 10001 11111
Required knowledge
Logic to print box number pattern
If you look carefully to this pattern you will find that 1 is printed for.
- Every column of first and last row.
- Start and end column of each row.
Below is the step by step descriptive logic to print the given 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 through columns run an inner loop from 1 to cols. The loop structure should look like for(j=1; j<=cols; j++).
- Inside the inner loop before printing 1 check the above mentioned condition. Which is if(i==1 || i==rows || j==1 || j==cols) then print 1 otherwise 0.
- Finally, move to the next line after printing all columns of a row.
Program to print box number pattern of 1s and 0s
/**
* C program to print box number pattern of 1's and 0's
*/
#include <stdio.h>
int main()
{
int rows, cols, i, j;
/* Input rows and columns from user */
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. You can further play with the given pattern to print
To print above pattern you just need to change single line in the above program. Replace the inner printf(“0”); with printf(” “);
Happy coding 😉