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UVA10370 Above Average
2017-06-11 13:40
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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 arr[1002], id; double ave; int main() { int t, n, i, count; scanf("%d", &t); while(t--){ scanf("%d", &n); ave = 0; for(i = 0; i < n; ++i){ scanf("%d", arr + i); ave += arr[i]; } ave /= n; count = 0; for(i = 0; i < n; ++i) if(arr[i] > ave) ++count; printf("%.3lf%%\n", count * 100.0 / n); } return 0; }
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