c++编译小问题 求解答

[renjun0324]

#include<iostream>
using namespace std;
#include<string.h>
int main()
{
char password[20];
strcpy(password,"123456");
cout<<"please inter:"<<endl;
char a[20];
cin>>a;
if(a==password)
cout<<"yes!";
if(a!=password)
cout<<"no!";
}
如何才能把123456赋值给password?

[W170532934]

#include<iostream>
using namespace std;
#include<string.h>
int main()
{
	char password[20];
	strcpy(password,"123456");
	cout<<"please inter:"<<endl;
	char a[20];
	cin>>a;
	if(strcmp(password,a)==0)
		cout<<"yes!";
	else
		cout<<"no!";
}

字符串比较，用==是不可以的。这样比较的只是字符串数组的地址。比较内容需要使用函数strcmp

[Gloveing]

记住字符串比较不是像单个字符一样直接比较
用：
strcmp, wcscmp, _mbscmp
Compare strings.

int strcmp( const char *string1, const char *string2 );

int wcscmp( const wchar_t *string1, const wchar_t *string2 );

int _mbscmp(const unsigned char *string1, const unsigned char *string2 );

#include<iostream>
using namespace std;
#include<string.h>

int main()
{
	char password[20];
	strcpy(password,"123456");
	cout<<"please inter:"<<endl;
	char a[20];
	cin>>a;
	if(!strcmp( a, password))
		cout<<"yes!";
	else
		cout<<"no!";

	return 0;
}

[Gloveing]

一楼也挺快啊。。。

[fzamygsd]

用c++的 string类吧