图形管理软件

#include <iostream.h> #include <fstream.h> #include <string.h> #include <stdlib.h> #include "shape.h" #include "circle.h" #include "rectangle.h" void MainMenu() { cout<<"1、添加圆形"<<endl <<"2、添加矩形"<<endl <<"3、显示所有图形"<<endl <<"4、退出"<<endl; cout<<"请输入您的选择："; } void readFile(char fileName[]) { Rectangle r,r_sum; Circle c,c_sum; ifstream in(fileName,ios::in|ios::binary); if(!in) { cout<<"文件打开错误！"<<endl; exit(1); } if(strcmp(fileName,"circle.dat")==0) { while(in.read((char *)&c,sizeof(c))!=NULL) { c.show(); c_sum+=c; } cout<<"\t\t\t\t总的半径为："<<c_sum.r<<endl; } else { while(in.read((char *)&r,sizeof(r))!=NULL) { r.show(); r_sum+=r; } cout<<"\t\t\t\t总的长度："<<r_sum.length<<endl <<"\t\t\t\t总的宽度："<<r_sum.width<<endl; } in.close(); } void main() { int choice; Circle c; Rectangle r; while(1) { system("cls"); MainMenu(); cin>>choice; if(choice==1) { c.input(); c.writeFile(); } else if(choice==2) { r.input(); r.writeFile(); } else if(choice==3) { readFile("circle.dat"); readFile("rect.dat"); } else if(choice==4) { break; } else { cout<<"输入了错误的编号"<<endl; } cout<<"按Enter键回到主菜单......."; cin.get(); cin.get(); } }