main.cpp

构造大数运算类 +；-；*；/ 并测试。<br>1. 不考虑括号 <br>2. 输入数据最大长度为40 位,要捕获异常 <br>3. 不考虑输入小数部分,<b

#include "bignum.h"
void main()
{
loop:	
try
	{
		BigNum myBigNum,myBigNum1,result;
	    myBigNum.Input();
	    myBigNum1.Input();
	    cout<<endl;
    	cout<<"加法";
    	result=myBigNum+myBigNum1;
    	result.Output();
    	cout<<endl;
    	cout<<"减法";
    	result=myBigNum-myBigNum1;
    	result.Output();
    	cout<<endl;
    	cout<<"乘法";
    	result=myBigNum*myBigNum1;
    	result.Output();
    	cout<<endl;
    	cout<<"除法"<<endl;
    	result=myBigNum/(myBigNum1);
    	cout<<"商";
    	result.Output();
	}
	catch (Zero)
	{
		cout<<endl;
		cout<<"error!"<<endl;
		cout<<"除数不能为0!"<<endl;
	}
	catch (MaxSize) 
	{
		cout<<endl;
		cout<<"error!"<<endl;
		cout<<"您输入的数字太大，不能超过四十位!"<<endl;
	}
	cout<<"请按回车键继续，空格键退出:"<<endl;
	getchar();
	char a=getchar();
	if (a==10) 
		goto loop;
	else exit(1);
}