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求高手,帮忙修改一下,为什么在VC中运行总显示错误呀

minhong2010 发布于 2010-11-23 11:28, 410 次点击
#include<iostream>
using namespace std;
class String
{
public:
    String()
    {p=NULL;}
    String(char *str);
    friend bool operator>(String &string1,String &string2);
    friend bool operator<(String &string1,String &string2);
    friend bool operator==(String &string1,String &string2);
    void display();
    char *p;
};
String::String(char *str)
{p=str;}
void String::display()
{cout<<p;}
bool operator>(String &string1,String &string2)
{
    if(strcmp(string1.p,string2.p)>0)
        return true;
    else
        return false;
}
bool operator<(String &string1,String &string2)
{
    if(strcmp(string1.p,string2.p)<0)
        return true;
    else
        return false;
}
bool operator==(String &string1,String &string2)
{
    if(strcmp(string1.p,string2.p)==0)
        return true;
    else
        return false;
}
void compare(String &string1,String &string2)
{
    if(operator>(string1,string2)==1)
    {string1.display();cout<<">";string2.display();}
    else
    if(operator<(string1,string2)==1)
    {string1.display();cout<<"<";string2.display();}
    else
    if(operator==(string1,string2)==1)
    {string1.display();cout<<"=";string2.display();}

int main()
{
    String string1("Hello"),string2("Book"),string3("Computer"),string4("Hello");
    compare(string1,string2);
    compare(string2,string3);
    compare(string1,string4);
    return 0;
}
3 回复
#2
hoho5682010-11-23 12:29
程序代码:
#include<iostream>
using namespace std;
class String
{
public:
    String()
    {p=NULL;}
    String(char *str);
    friend bool operator>(String &string1,String &string2);
    friend bool operator<(String &string1,String &string2);
    friend bool operator==(String &string1,String &string2);
    void display();
    char *p;
};
String::String(char *str)
{p=str;}
void String::display()
{cout<<p;}
bool operator>(String &string1,String &string2)
{
    if(strcmp(string1.p,string2.p)>0)
        return true;
    else
        return false;
}
bool operator<(String &string1,String &string2)
{
    if(strcmp(string1.p,string2.p)<0)
        return true;
    else
        return false;
}
bool operator==(String &string1,String &string2)
{
    if(strcmp(string1.p,string2.p)==0)
        return true;
    else
        return false;
}
void compare(String &string1,String &string2)
{
    if(operator>(string1,string2)==1)
    {string1.display();cout<<">";string2.display();}
    else
    if(operator<(string1,string2)==1)
    {string1.display();cout<<"<";string2.display();}
    else
    if(operator==(string1,string2)==1)
    {string1.display();cout<<"=";string2.display();}

}                                                                     //大哥,少了一个括号。。还有,你不会看错误原因吗?

int main()
{
    String string1("Hello"),string2("Book"),string3("Computer"),string4("Hello");
    compare(string1,string2);
    compare(string2,string3);
    compare(string1,string4);
    return 0;
}
#3
木头lbj2010-11-24 22:50
额。。。。。。
#4
南国利剑2010-11-25 01:10
回复 楼主 minhong2010
int main
上面少了个}
1