课程设计——输出到TXT

#include "fstream.h"struct student{ char name[20]; int num; int age; char sex; };

int main(){ student stud[3]={"Li",1001,18,‘f‘,"Fun",1002,19,‘m‘,"Wang",1004,17,‘f‘}; ofstream outfile("stud.dat",ios::binary);//打开文件我这是dat格式的，你可以用txt if(!outfile) {  cerr<<"open error!"<<endl;  return 0; } for(int i=0;i<3;i++)  outfile.write((char *)&stud[i],sizeof(stud[i]));//写数据到文件中 outfile.close();//关闭流    ifstream infile("stud.dat",ios::binary);//下面是 从 文件中读数据出来。 if(!infile) {  cerr<<"open error!"<<endl;  return 0; } for(int j=0;j<3;j++) infile.read((char *)&stud[j],sizeof(stud[j])); for (int k=0;k<3;k++) {  cout<<"NO."<<k+1<<endl;  cout<<"name:"<<stud[k].name<<endl;  cout<<"num:"<<stud[k].num<<endl;  cout<<"age:"<<stud[k].age<<endl;  cout<<"sex:"<<stud[k].sex<<endl; } return 0; }