C Program to Read 10 Numbers and Find their Sum and Average

Write a C program to read 10 numbers and find their sum and average using for loop. In this example, for loop iterate from 1 to 10, add each number to the sum to find the sum of 10 numbers. Next, we calculate the average.

#include <stdio.h>

int main()
{   
    int num, sum = 0;
    float avg;
    
    printf("Please Enter the 10 Numbers\n");
    for(int i = 1; i <= 10; i++)
    {
        printf("Number %d = ", i);
        scanf("%d", &num);
        sum = sum + num;
    }

    avg = sum / 10;

    printf("\nThe Sum of 10 Numbers     = %d", sum); 
    printf("\nThe Average of 10 Numbers = %.2f\n", avg);
}

This C program reads 10 numbers from the user input and calculates their sum and average using a while loop.

#include <stdio.h>

int main()
{   
    int num, i, sum = 0;
    float avg;
    
    printf("Please Enter the 10 Numbers\n");
    i = 1;

    while(i <= 10)
    {
        printf("Number %d = ", i);
        scanf("%d", &num);
        sum = sum + num;
        i++;
    }

    avg = (float)sum / 10.0;

    printf("\nThe Sum of 10 Numbers     = %d", sum); 
    printf("\nThe Average of 10 Numbers = %.2f\n", avg);
}

Please Enter the 10 Numbers
Number 1 = 22
Number 2 = 33
Number 3 = 44
Number 4 = 55
Number 5 = 67
Number 6 = 89
Number 7 = 123
Number 8 = 234
Number 9 = 543
Number 10 = 199

The Sum of 10 Numbers     = 1409
The Average of 10 Numbers = 140.90