# C Program to find Average of N Numbers

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## Using for loop

In the following example, we will find the average of numbers between 1 and 10 using for loop.

### Example

C Compiler
#include <stdio.h> int main() { int start = 1; int end = 10; int total = 0; float count = (end - start) + 1; float average = 0; printf("Average of numbers between %d and %d:\n", start, end); for(start=start; start<=end; start++) total += start; printf("\nTotal = %d", total); printf("\ncount = %.f", count); average = total / count; printf("\nAverage is %.1f", average); return 0; }

### Output

Average of numbers between 1 and 10: Total = 55 count = 10 Average is 5.5

## Using while loop

In the following example, we will find the average of numbers between 1 and 10 using while loop.

### Example

C Compiler
#include <stdio.h> int main() { int start = 1; int end = 10; int total = 0; float count = (end - start) + 1; float average = 0; printf("Average of numbers between %d and %d:\n", start, end); while(start <= end) { total += start; start++; } printf("\nTotal = %d", total); printf("\ncount = %.f", count); average = total / count; printf("\nAverage is %.1f", average); return 0; }

### Output

Average of numbers between 1 and 10: Total = 55 count = 10 Average is 5.5

## Using do while loop

In the following example, we will find the average of numbers between 1 and 10 using do while loop.

### Example

C Compiler
#include <stdio.h> int main() { int start = 1; int end = 10; int total = 0; float count = (end - start) + 1; float average = 0; printf("Average of numbers between %d and %d:\n", start, end); do{ total += start; start++; }while(start <= end); printf("\nTotal = %d", total); printf("\ncount = %.f", count); average = total / count; printf("\nAverage is %.1f", average); return 0; }

### Output

Average of numbers between 1 and 10: Total = 55 count = 10 Average is 5.5

## Find Average of N Numbers for any Given Range

In the following example, we will find the average of N numbers between the user given range.

### Example

C Compiler
#include <stdio.h> int main() { int start, end; int total = 0; float count = 0; float average = 0; printf("Enter a (int) starting number: "); scanf("%d", &start); printf("Enter an (int) ending number: "); scanf("%d", &end); count = (end - start) + 1; printf("Average of numbers between %d and %d:\n", start, end); for(start=start; start<=end; start++) total += start; printf("\nTotal = %d", total); printf("\ncount = %.f", count); average = total / count; printf("\nAverage is %.1f", average); return 0; }

### Output

Enter a (int) starting number: 5 Enter an (int) ending number: 14 Average of numbers between 5 and 14: Total = 95 count = 10 Average is 9.5

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