expremain.cpp

栈的操作与应用 定界符配对检查 中缀转后缀并求值

#include"function1.h"
#include"function2.h"
#include <math.h>
#include <string.h>
#include <iostream.h>
#include<strstrea.h>
#include<fstream.h>


void main(){
for(;;){
	char input;
		system("cls");
		cout << "     =======================栈的操作应用==================\n";
		cout << "                                      \n";
		cout << "       0:---- 出口"<<endl;
		cout << "       1:---- 定界符配对检查"<<endl;
		cout << "       2:---- 中缀转后缀并求值"<<endl;
		cout << "     =====================================================\n";
		cout << "请选择0/1/2: ";
	
		cin >> input;
		cout << "                                      \n";
		switch(input){
		case'0':
			cout<<"再见"<<endl;
			cout << "                                      \n";
			exit(-1);
			break;
		case'1':
			char ch2;
			do{
		Check();
		cout<<"是否继续？<y/n>"<<endl;
		cin>>ch2;
		}while(ch2=='y');
		system("pause");
				
				break;
		case'2':{
			char ch1;
		do{
			opera2();
		cout<<"是否继续？<y/n>"<<endl;
		cin>>ch1;
		}while(ch1=='y');
		system("pause");	
		break;
		default:
			system("cls");
				}	break;
				
}
}
}