string.cpp

实现一个字符串类的若干函数的操作

// string.cpp : Defines the entry point for the console application.
//

#include<iostream.h>
#include"SimpleString.h"

int main(int argc, char* argv[])
{

//测试构造函数
	CSimpleString A("abc"),B("abcEF"), C(A), D("  ab  ");
	cout<<"String A="<<A<<"; "<<"String B="<<B<<"; "<<"String C="<<C<<"; "<<"String D="<<D<<";"<<endl;
	cout<<endl;

//测试函数 IsEmpty()、TrimLeft()、TrimRight()、empty()
	bool i=D.IsEmpty();
	if(i==1)	cout<<"String D is empty."<<endl;
	if(i==0) cout<<"String D is not empty."<<endl;
	cout<<"The length of string D is: "<<D.GetLength()<<endl;
	D.TrimLeft();
	cout<<"After delete the left space chars of D : D="<<D<<";"<<endl;
	D.TrimRight();
	cout<<"After delete the right space chars of D : D="<<D<<";"<<endl;
	D.empty();
	cout<<"After set D empty : The length of D is : "<<D.GetLength()<<"      ";
	i=D.IsEmpty();
	if(i==1)	cout<<"String D is empty."<<endl;
	if(i==0) cout<<"String D is not empty."<<endl;
	cout<<endl;

//测试函数 insert、delete 和 运算符 <、>、==
	cout<<"Is A < B ? : "<< (A<B) <<endl;
	cout<<"Is A > B ? : "<< (A>B) <<endl;
	B.Insert(3,'d');
	cout<<"After insert 'd' in B[3] : B="<<B<<endl;
	B.Delete(0,4);
	cout<<"After delete 4 chars begin at B[0] : B="<<B<<endl;
	cout<<endl;

//测试运算符 +=、+	
	A+="d";
	cout<<"The result of A+='d' is: A="<<A<<endl;
	A+=B;
	cout<<"The result of A+=B is: A="<<A<<endl;
	C=A+"gh";
	cout<<"The result of C=A+'gh' is: C="<<C<<endl;
	cout<<endl;

//测试运算符 [] 和 强制类型转换运算符
	A[3]='D';
	cout<<"After A[3]='D' : A="<<A<<endl;
	char ch=A[2];
	cout<<"ch=A[2]="<<ch<<endl;
	const char *p=(const char *)A;
	cout<<"After *p=(const char *)A : (*p)="<<p<<endl;
	cout<<endl;

//测试函数 	MakeReverse()、MakeUpper()、MakeLower()
	A.MakeReverse();
	cout<<"After makereverse A="<<A<<endl;
	A.MakeUpper();
	cout<<"After makeupper A="<<A<<endl;
	A.MakeLower();
	cout<<"After makelower A="<<A<<endl;

	return 0;
}