/*  File: mean.c
    Calculate the mean value for the elements in an array */
    
#include <stdio.h>

#define N 8

int main()
{
    /*Declare array a with initialization */
    double a[N] = {3.0,21.0,0.0,-3.0,34.0,-14.0,45.0,18.0};
    double  sum,
            meanval;
            
    int i;
    
    sum = 0;
    
    for(i=0;i<N;i++)
    {
        sum += a[i];
    }
    meanval = sum/(double)N;
    printf("The mean value of the array is %f\n",meanval);
    return 0;
}