In this tutorial, i am going to show you how to find sum and average of n numbers in the c program using for loop and while loop.

## Algorithm and Programs to Find Sum and Average of N Numbers in C

- Algorithm to Find Sum and Average of N Numbers
- C Program to Find Sum and Average of N Numbers using For Loop
- C Program to Find Sum and Average of N Numbers using While Loop

### Algorithm to Find Sum and Average of N Numbers

Follow the below given algorithm to write a program to find the sum and average of n numbers:

- Step 1: Start Program.
- Step 2: Read the term of n numbers from the user.
- Step 3: Then read one by one numbers and calculate sum and average of n numbers using for loop or while loop.
- Step 4: Show sum and average n number.
- Step 5: Stop Program.

### C Program to Find Sum and Average of N Numbers using For Loop

#include <stdio.h> int main() { int num, sum = 0, n; float avg; printf("Please Enter term of n number:-"); scanf("%d", &n); for(int i = 1; i <= n; i++) { printf("Number %d = ", i); scanf("%d", &num); sum = sum + num; } avg = sum / n; printf("\nThe Sum of n Numbers = %d", sum); printf("\nThe Average of n Numbers = %.2f\n", avg); }

**The result of the above c program; as follows:**

Please Enter term of n number:-5 Number 1 = 1 Number 2 = 2 Number 3 = 3 Number 4 = 4 Number 5 = 5 The Sum of n Numbers = 15 The Average of n Numbers = 3.00

### C Program to Find Sum and Average of N Numbers using While Loop

#include <stdio.h> int main() { int num, i, sum = 0, n; float avg; printf("Please enter term of n numbers :- "); scanf("%d", &n); i = 1; while(i <= n) { printf("Number %d = ", i); scanf("%d", &num); sum = sum + num; i++; } avg = (float)sum / n; printf("\nThe Sum of n Numbers = %d", sum); printf("\nThe Average of n Numbers = %.2f\n", avg); }

**The result of the above c program; as follows:**

Please enter term of n numbers :- 5 Number 1 = 1 Number 2 = 2 Number 3 = 3 Number 4 = 4 Number 5 = 5 The Sum of n Numbers = 15 The Average of n Numbers = 3.00