Above Average
Description
It is said that 90% of frosh expect to be above average in their class. You are to provide a reality check.
Input
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.
Output
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
Sample Output
40.000% 57.143% 33.333% 66.667% 55.556%
求大于平均分的学生人数所占的比例
#include <stdio.h>
main()
{
int num,n,i,j,temp;
float sum,ave;
int a[1005];
scanf("%d",&num);
while(num--)
{
sum=0;
ave=0;
temp=0;
scanf("%d",&n);
for(i=1;i<=n;i++)
{ scanf("%d",&a[i]);
sum+=a[i];
}
ave=sum/n;
for(i=1;i<=n;i++)
if(a[i]>ave)
temp++;
printf("%.3f%c\n",(float)temp/(float)n*100,'%');
}
}
