Program to print the given number pattern
11111
2222
333
44
5

C Programming Language / Loop control in C Language

6786

Program:

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

#include <stdio.h>

int main()
{
    int i, j, N;

    printf("Enter N: ");
    scanf("%d", &N);

    for(i=1; i<=N; i++)
    {
        // Logic to print numbers
        for(j=i; j<=N; j++)
        {
            printf("%d", i);
        }

        printf("\n");
    }

    return 0;
}

Output:

Enter N: 5
11111
2222
333
44
5

Explanation:

Required knowledge

Basic C Programming, Loop

Logic to print the given number pattern

To get the logic of above pattern just have a close eye on the pattern. Lets suppose that the rows starts from 1 to N (where N is the total rows to be printed). Then total columns per row is N - current_row_number + 1 i.e. first row contains 5 - 1 + 1 = 5 columns and so on. And for each column the current row number gets printed. Hence, the step by step descriptive logic to print the given logic is:

  1. To iterate through rows, start an outer loop from 1 to N.
  2. To print the numbers, start an inner loop from current row number to N. Inside this loop print the value of current row number.

And you are done, lets now write down its code.


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