ASSERTS : define « Development « C++ Tutorial

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C++ Tutorial » Development » define

5.16.1.ASSERTS

#define DEBUG

 #include <iostream>

 

 #ifndef DEBUG

     #define ASSERT(x)

 #else

     #define ASSERT(x) \

         if (! (x)) \

         { \

             std::cout << "ERROR!! Assert " << #x << " failed\n"; \

             std::cout << " on line " << __LINE__  << "\n"; \

             std::cout << " in file " << __FILE__ << "\n";  \

         }

 #endif

 

 int main()

 {

     int x = 5;

     std::cout << "First assert: \n";

     ASSERT(x==5);

     std::cout << "\nSecond assert: \n";

     ASSERT(x != 5);

     std::cout << "\nDone.\n";

     return 0;

 }

First assert:

Second assert:
ERROR!! Assert x != 5 failed
 on line 24
 in file ASSERTS.cpp

Done.

5.16.define
	5.16.1.	ASSERTS
	5.16.2.	function macro of get the max value number
	5.16.3.	Using parentheses in macros.
	5.16.4.	Using inline rather than a macro.
	5.16.5.	A simple assert() macro.
	5.16.6.	Printing values in DEBUG mode

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