C Programming Code Examples C > Mathematics Code Examples Find the sum of natural numbers using while loop Find the sum of natural numbers using while loop #include <stdio.h> int main() { int n, count, sum = 0; printf("Enter the value of n(positive integer): "); scanf("%d",&n); /* When you use while loop, you have to initialize the loop counter variable before the loop and increment or decrement it inside the body of loop like we did for the variable "count" */ count=1; while(count <= n){ sum = sum + count; count++; } printf("Sum of first %d natural numbers is: %d",n, sum); return 0; }
