C program to find sum and average of 3 and 5 numbers; In this tutorial, you will learn how to find sum and average of 3 and 5 numbers in c.

## Algorithm and Programs to Find Sum and Average of 3, 5 Number in C

Let’s use the following algorithm and program to print sum and average of 3 numbers in c:

- Algorithm of find sum and average of three or five numbers
- C Program to Find Sum and Average of 3 Number
- C Program to Find Sum and Average of 5 Number

### Algorithm of find sum and average of three or 5 numbers

- Step 1: Start
- Step 2: Read the three or five numbers from the user.
- Step 3: Declared a variables “Avg” and “Sum”.
- Step 4: Calculate sum and average of 3 or 5 numbers using the followig formulas:
- sum = (a+b+c);
- avg = (a+b+c)/3;
- sum = (a+b+c+e+f);
- avg = (a+b+c+e+f)/3;

- Step 5:Display “sum ” and “Avg”.
- Step 6:End.

### C Program to Find Sum and Average of 3 Number

#include<stdio.h> int main() { float a,b,c,avg,sum; printf("Please enter 3 numbers "); scanf("%f%f%f", &a, &b, &c); sum=(a+b+c); avg=sum/3; printf("\Sum is %f",sum); printf("\nAverage is %f",avg); return 0; }

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

Please enter 3 numbers 1 2 3 Sum is 6.000000 Average is 2.000000

### C Program to Find Sum and Average of 5 Number

#include<stdio.h> int main() { float a, b, c, d, e, s, avg; printf("Please Enter 5 Numbers :"); scanf("%f%f%f%f%f", &a, &b, &c, &d, &e); s = a + b + c + d + e; avg = s / 5; printf("\nThe Sum is :%f", s); printf("\nThe Average is :%f", avg); return 0; }

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

Please Enter 5 Numbers :1 2 3 4 5 The Sum is :15.000000 The Average is :3.000000