1、首先打开VC++6.0
2、选择文件，新建
3、选择C++ source file 新建一个空白文档
4、首先声明头文件
#include<stdio.h>
5、主函数，定义变量
main( )
{
FILE *fp;
int i;
6、需要一个结构体，
struct rec{ /*定义结构体类型*/
char id[10];
char name[15];
char department[15];
}record;
7、主要代码
if( (fp=fopen("d:\\infile.txt","w"))==NULL ) /*以文本只写方式打开文件*/
{
printf("cannot open file");
exit(1);
}
printf("please input data:\n");
for( i=0;i<2;i++)
{
printf("Please input id:\n");
scanf("%s",record.id); /*从键盘输入*/
printf("Please input name:\n");
scanf("%s",record.name);
printf("Please input department:\n");
scanf("%s",record.department);
fprintf(fp,"%s %s %s\n",record.id,record.name,record.department); /* 写入文件*/
}
fclose(fp); /*关闭文件*/
if((fp=fopen("d:\\infile.txt","r"))==NULL)
{ /*以文本只读方式重新打开文件*/
printf("cannot open file");
exit(0);
}
printf("output from file:\n");
/*从文件读入*/
while (fscanf(fp,"%s %s %s\n",record.id,record.name,record.department)!=EOF)
{
printf("id:%s name:%s department:%s\n",record.id,record.name,record.department); /* 显示到屏幕*/
}
fclose(fp); /*关闭文件*/
scanf("%d",i);
