Program to print the given pattern 
11111
22222
33333
44444
55555

C Programming Language Loop control in C Language (Article) Loop control in C Language (Program)

25965

Program:

/**
 * C program to print number pattern
 * www.atnyla.com
 */

#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 the current row number
            printf("%d", i);
        }

        printf("\n");
    }

    return 0;
}

Output:

Enter number of rows: 5
Enter number of columns: 5
11111
22222
33333
44444
55555

Explanation:

Required knowledge

Basic C programming, Loop

Logic to print the given pattern

Below is the step by step descriptive logic to print the given number 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 through columns run an inner loop from 1 to cols. The loop structure should look like for(j=1; j<=cols; j++).
  4. Now, for each row the current row number is printed. Hence, print the value of i to print current row number.
  5. Finally move to next line after printing all columns of a row.

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