Question

vc中怎么才读取txt文件中100个学生名字，并把它存入数组中。

Answer 1

运行后会再C盘自动建立一个txt文件，可读可写

#include <iostream>
#include <fstream>
using namespace std;
void main()
{
ofstream outfile("c:\\student.txt");
ifstream infile;
char name[8],id[20];
int math,eng,computer;
for(int i=0;i<3;i++)
{
cout<<"输入姓名: ";
cin>>name;
cout<<"输入身份证号: ";
cin>>id;
cout<<"输入数学成绩: ";
cin>>math;
cout<<"输入英语成绩: ";
cin>>eng;
cout<<"输入计算机成绩: ";
cin>>computer;
outfile<<name<<" "<<id<<" "<<math<<" "<<eng<<" "<<computer<<endl;
}
outfile.close();

infile.open("c:\\student.txt");
//infile>>name;
for(int s=0;s<3;s++)
{
infile>>name>>id>>math>>eng>>computer;
cout<<"输出姓名: "<<name<<endl;
cout<<"输出身份证号: "<<id<<endl;
cout<<"输出数学成绩: "<<math<<endl;
cout<<"输出英语成绩: "<<eng<<endl;
cout<<"输出计算机成绩: "<<computer<<endl;
//infile>>name;

}
infile.close();
}

Answer 2

/* Note:Your choice is C IDE */
#include "stdio.h"
#include "stdlib.h"
int main()
{
char a=0;
while(a!='#')
{
print();
printf("输入#号结束程序,其他键继续：");
scanf("%s",&a);
system("cls"); //清屏
}
}

print()
{FILE *in;
char ch,infile[10];
printf("输入读入文件的名字：");
scanf("%s",infile);
if((in=fopen(infile,"r"))!=NULL)
{
while(!feof(in))
{ch=fgetc(in);
putchar(ch);
}
putchar(10);
fclose(in);
}
else
{printf("无法打开此文件，请重新输入：\n");

}

return 0;
}