C实例 计算平均值

#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;

}