C Program Examples - To Calculate Average

C Program To Calculate Average

#include<stdio.h>                                                             
#define N 5                                                                     
                                                                                
void main()                                                                     
{                                                                               
 int i, j, n;                                                                   
                                                                                
 float avg, a[N], sum;                                                          
 printf("Enter number of elements:\n");                                         
 scanf("%d", &n);                                                               
                                                                                
 /* Reading array elements */                                                   
 printf("Input %d values \n", n);                                               
 for(i=0; i<n; i++)                                                             
 {                                                                              
  scanf("%f", &a[i]);                                                           
 }                                                                              
 sum = 0;                                                                       
 for(i=0;i<n;i++)                                                               
 {                                                                              
  sum += a[i];                                                                  
 }                                                                              
                                                                                
 avg = sum/n;                                                                   
/*printing result */                                                            
 printf("\nSum is %f\n", sum);                                                  
 printf("\nAverage is %f\n", avg);                                              
}          
Output:
$ cc average.c 
$ ./a.out 
Enter number of elements:
5
Input 5 values 
22
24
54
12
37

Sum is 149.000000

Average is 29.799999

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