10370 - Above Average

Problem D: Above Average

It is said that 90% of frosh expect to be above average in their class. You are to provide a reality check.

The first line of standard input contains an integer C, the number of test cases. C data sets follow. Each data set begins with an integer, N, the number of people in the class (1 <= N <= 1000). N integers follow, separated by spaces or newlines, each giving the final grade (an integer between 0 and 100) of a student in the class. For each case you are to output a line giving the percentage of students whose grade is above average, rounded to 3 decimal places.

Sample Input

5
5 50 50 70 80 100
7 100 95 90 80 70 60 50
3 70 90 80
3 70 90 81
9 100 99 98 97 96 95 94 93 91

Output for Sample Input

40.000%
57.143%
33.333%
66.667%
55.556%

#include"stdio.h"
int main()
{  double c,n,s[1000],g,m,a,t;//其中c代表有多少组数据，n代表数据多少个数；s[1000]保存数据；g代表超过平均个数；a代表平均数； 
   int i;
   scanf("%lf",&c);
   while(c--)
   { scanf("%lf",&n);
     m=0;
     g=0;
     for(i=0;i<n;i++)
     {scanf("%lf",&s[i]);
       m+=s[i];}
      a=m/n;
     for(i=0;i<n;i++)
       if(s[i]>a)
       g++;
     t=g/n*100;
     printf("%0.3lf",t);
     printf("%%\n");//输出%;
     }
 return 0; 
     }