C++下最简单的log打印函数

#include <iostream>using namespace std; #ifndef DEBUG#define LOG(log)#else#define LOG(log) cout << "File:" << __FILE__ << "/tLine:" << __LINE__ << "/t" << log <<endl#endif int main(){    int ia[3] = {1, 2, 3};     for (int i = 0; i < 3; i++)    {        LOG(ia[i]);    }}

编译时使用gcc -O test.cpp -lstdc++ -DDEBUG就会Log信息

如果使用gcc -O test.cpp -lstdc++就没有Log信息