C program to print all natural numbers from 1 to n using while loop

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 Write a C program to enter any number from user and print all natural numbers from 1 to n using while loop. How to print all natural numbers from 1 to n using while loop in C programming.

Example

Input

Input upper limit to print natural numbers: 10

Output

Natural numbers from 1 to 10: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

Required knowledge

Basic C programming, Loop

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Program to print natural numbers using while loop

/**
 * C program to print all natural numbers from 1 to n using while loop
 */

#include <stdio.h>

int main()
{
    int i, end;

    /*
     * Input a number from user
     */
    printf("Print all natural numbers from 1 to : ");
    scanf("%d", &end);

    /*
     * Print natural numbers from 1 to end
     */
    i=1;
    while(i<=end)
    {
        printf("%d\n", i);
        i++;
    }

    return 0;
}

Note: Initialize the loop counter variable i with some starting limit value i.e. i = start;, to print natural numbers in range.


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