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源文件如何和头文件一起编辑?
operation.cpp:
#include "operation.h"
int add(int a,int b)
{
return a+b;
}
operation.h
#ifndef _OPERTION_H
#define _OPERTION_H
int add(int a,int b);
#endif
main.cpp
#include <iostream>
#include "operation.h"
int main()
{
int a=1;
int b=2;
std::cout<<"你好啊,朋友"<<std::endl;
std::cout<<"a+b = "<<add(a,b)<<std::endl;
}
在CMakeLists.txt添加头文件搜索路径
add_executable (Demo main.cpp operation.cpp)
include_directories(.)