#include <stdio.h>

#include <stdlib.h>

#define N 10

int cmp(const void *a,const void *b){

? ? return *(int*)b - *(int*)a;

}

int Sum(int score[]){

? ? int s = 0,i;

? ? for(i = 0 ; i < N ; i++)

? ? ? ? s += score[i];

? ? return s;

}

int Max(int score[]){

? ? return score[0];

}

int Min(int score[]){

? ? return score[N-1];

}

double Avg(int s){

? ? return (s + 0.0) / N;

}

int main()

{

? ? int score[N]={67,98,75,63,82,79,81,91,66,84};

? ? int i,sum;

? ? sum = Sum(score);

? ? qsort(score,N,sizeof(int),cmp);//sort it

? ? printf("Total score : %d\n",sum);

? ? printf("Max score : %d\n",Max(score));

? ? printf("Min Score : %d\n",Min(score));

? ? printf("Average score : %f\n",Avg(sum));

? ? printf("\n成績排序:\n");

? ? for(i = 0 ; i < N ; i++)

? ? {

? ? ? ? printf("Rank %d's score : %d\n",i+1,score[i]);

? ? }

? ? return 0;

}

平均分只能輸成

Average?score?:?78.600000

我的結果是：

運行成功

Total?score?:?786
Max?score?:?98
Min?Score?:?63
Average?score?:?78.600000

成績排序:
Rank?1's?score?:?98
Rank?2's?score?:?91
Rank?3's?score?:?84
Rank?4's?score?:?82
Rank?5's?score?:?81
Rank?6's?score?:?79
Rank?7's?score?:?75
Rank?8's?score?:?67
Rank?9's?score?:?66
Rank?10's?score?:?63