浙江农林大学C语言程序设计习题集答案(4)

void print(struct student stu[6]) {int i,j;

printf(\ No. name score1 score2 for(i=0;i

第13章 文件

一、选择题 C C B B A 二、编程

C C D D C

D D D

printf(\for(j=0;j<3;j++) printf(\printf(\

score3\\n\

1.

#include #include void main() { }

FILE *fp; char str[80];

if((fp=fopen(\ printf(\while(!feof(fp)) { }

fscanf(fp,\

if(strstr(str,\

printf(\

fclose(fp);

2.

#include #include void main() {

FILE *fp; int n,sum=0;

if((fp=fopen(\ printf(\while(!feof(fp))

}

{

fscanf(fp,\ sum+=n; }

fprintf(fp,\fclose(fp);

3.

#include #include

void main(int argc,char *argv[ ]) { } 4.

#include #include void main() {

FILE *fp;

int n,a=0,b=0,c=0;

if((fp=fopen(\ printf(\FILE *in,*out; char ch; if (argc!=3) { } {

printf(\ exit(0); }

if((out=fopen(argv[2],\{

printf(\

printf(\ou forgot to enter a filename\\n\exit(0);

if((in=fopen(argv[1],\

exit(0); }

while(!feof(in)) fputc(fgetc(in),out); fclose(in); fclose(out);

}

while(!feof(fp)) {

fscanf(fp,\if(n>0) a++; else if(n<0)

b++;

else c++; }

printf(\正数有%d个，负数有%d个，零有%d个\\n\fclose(fp);