1048.cpp

acm答案1048,1115,1002,1915,2201,2736

#include<stdio.h>

int main()

{

    int i;

    float num[12],aver=0.00,sum=0.00;

    for(i=0;i<12;i++)

        {

           scanf("%f",&num[i]);

           sum+=num[i];

        }

    aver=sum/12.00+0.005;

    printf("$%.2f",aver);

    return 0;

}