3.Write a C program to print the sum of n natural numbers. the sum of first ‘n’ natural no`s- 1+2+3+…..+n=n*(n+1)/2

Posted: September 15, 2012 in CSE Sem1, ECE Sem1, Lab 9, Lab 9
#include<stdio.h>
int main()
{
int n,sum=0;
printf("Enter Number");
scanf("%d",&n);
sum=n*(n+1)/2;
printf("%d",sum);
return 0;
}

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