c/c++可以有多个函数声明,但实现只能有一个
例子:
- //file t_defs.h
-
#ifndef _T_DEFS_H_
-
#define _T_DEFS_H_
-
-
void say(void);
-
-
#endif
- //file t_include.cpp
-
#include <iostream>
-
#include "t_defs.h"
-
-
using namespace std;
-
-
void say(void);
-
int main(void){
-
-
say();
-
-
}
-
-
void say(void){
-
-
cout << " hello" << endl;
-
}
- //file t_include.cpp
- #include <iostream>
-
#include "t_defs.h"
-
-
using namespace std;
- void say(void);
-
/* error: multiple definition of `say()'
- void say(void){
- cout << " hello" << endl;
- }
-
×/
-
#g++ t_include.cpp t_include_1.cpp
#./a.out
阅读(612) | 评论(0) | 转发(0) |