Home C C++ Java Python Perl PHP SQL JavaScript Linux Online Test Forum

Home » Solved Programs » Sum of first 10 natural numbers

C program to compute sum of first n natural number using while loop

This C program takes count of natural numbers from user and then calculates the sum using while loop.


#include<stdio.h>
    
int main()
{
int no, i,sum = 0;   

printf("Enter the count for natural numbers: ");
scanf("%d", &no);

i=1;  
while(i<=no) {
  sum = i + sum ;       
  i++ ;                       
}

printf("The Sum of first %d natural numbers is :  %d\n", no, sum);
return 0;
}

Sum of first 10 natural numbers