Code
// WAP to find sum of natural numbers using (do---while) loop... #include <stdio.h> int main() { int num, sum = 0, i = 1; printf("Enter A Number:\n"); scanf("%d", &num); do { sum += i; i++; } while (i <= num); printf("Sum of natural number is\n%d", sum); return 0; }
Output
Enter A Number: 100 Sum of natural number is 5050