泛型编程_模板示例

/*

 * template.h

 *

 *  Created on: 2011-5-18

 *      Author: Administrator

 */



#ifndef TEMPLATE_H_

#define TEMPLATE_H_

template<typename T>

int compare(const T& val1, const T& val2 )

{

if(val1>val2)return 1;

else if(val1==val2)return 0;

else return -1;

}


#endif /* TEMPLATE_H_ */

/*

 * main.cpp

 *

 *  Created on: 2011-5-18

 *      Author: Administrator

 */



#include "template.h"

#include <iostream>

#include <string>

using namespace std;



int main()

{

string str1="hijack", str2="jackjones";

cout<<compare(5,8)<<endl;

cout<<compare(str1,str2)<<endl;

cout<<compare(2.3,6.41)<<endl;

cout<<compare('c','h')<<endl;

return 0;

}

output:

-1

-1

-1

-1