caffe源码阅读(二)---caffe.cpp

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参考:
https://blog.csdn.net/c20081052/article/details/80603273
https://blog.csdn.net/jiongnima/article/details/55053059
发现了个很好的C++语法查询网站讲解清晰,而且可以在线运行例子。
#ifndef expr 查看expr定义了没有,如果没有定义会怎样怎样

#define ABCD 2
#include <iostream>
 
int main()
{
 
#ifdef ABCD
    std::cout << "1: yes\n";
#else
    std::cout << "1: no\n";
#endif
 
#ifndef ABCD
    std::cout << "2: no1\n";
#elif ABCD == 2
    std::cout << "2: yes\n";
#else
    std::cout << "2: no2\n";
#endif
 
#if !defined(DCBA) && (ABCD < 2*4-3)
    std::cout << "3: yes\n";
#endif
}
//Output:
1: yes
2: yes
3: yes

好了,今天开始阅读caffe.cpp了。

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