前言

在$c++$中，assert只在debug模式下起作用，为了在release下也使用，我们可以实现自己的assert

实现

#include<iostream>
#include<cstdlib>bool myAssert(bool expr, const char* file, const char* func, int line)
{if (!expr){std::cerr << "[Assertion failed], "<< "file: " << file	<<", "<< "function: "<<func<<","<< "line: " << line<< "." << std::endl;return false;}return true;
}#define MY_ASSERT(expr) myAssert(expr, __FILE__, __FUNCTION__, __LINE__)//#define MY_ASSERT(expr) \
//	if (!(expr)) { \
//		std::cerr<<"Assertion failed: (" #expr "), function "<<__FUNCTION__ \
//		<<", file "<<__FILE__<<", line "<<__LINE__<<"."<<std::endl; \
//		return false; \
//	}int main()
{int x = 5;if(!MY_ASSERT(x == 5)) return 2;if(!MY_ASSERT(x == 0)) return 3;std::cout << "the line will not be executed if the second assert fails." << std::endl;return 0;
}