等级考试上机题目(上课用)(14)

#include <stdio.h>

float fun (float *a , int n)

{

}

main()

{float score[30]={90.5, 72, 80, 61.5, 55}, aver;

void NONO ();

aver = fun(score, 5);

printf("\nAverage score is: %5.2f\n", aver);

NONO ();

}

void NONO ()

{/* 本函数用于打开文件，输入数据，调用函数，输出数据，关闭文件。*/

FILE *fp, *wf ;

int i, j ;

float aver, score[5] ;

fp = fopen("in.dat","r");

wf = fopen("out.dat","w");

for(i = 0 ; i < 10 ; i++) {

for(j = 0 ; j < 5 ; j++) fscanf(fp,"%f,",&score[j]);

aver = fun(score, 5);

fprintf(wf, "%5.2f\n", aver);

}

fclose(fp);

fclose(wf);

}

14