等级考试上机题目(上课用)(6)

}

main()

{int a,b; long c;

void NONO ();

printf("Input a, b:");

scanf("%d,%d", &a, &b);

fun(a, b, &c);

printf("The result is: %ld\n", c);

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 *rf, *wf ;

int i, a,b ; long c ;

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

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

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

fscanf(rf, "%d,%d", &a, &b);

fun(a, b, &c);

fprintf(wf, "a=%d,b=%d,c=%ld\n", a, b, c);

}

fclose(rf);

fclose(wf);

}

第3套

1．程序填空题

#include <math.h>

#include <stdio.h>

int fun(char *fname)

{FILE *fp; int i,n; float x;

if((fp=fopen(fname, "w"))==NULL) return 0;

6