C语言求平均值

#include <stdio.h>

int main() {
   float mean;
   int sum, i;
   int n = 5;
   int a[] = {2,6,7,4,9};

   sum = 0;

   for(i = 0; i < n; i++) {
      sum+=a[i];
   }

   printf("Mean = %f ", sum/(float)n);

   return 0;
}