if endif elif else Conditional Compilation Macros | C++ Video Tutorial

In this c++ Video tutorial, you will learn the conditional compilation macros such as #if, #endif, #elif, #else pre processor directives.

You are gonna learn what are conditional compilation macros and what is the use of them, how use themin your program in detail with example.

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[Martin-wzrm]

i don't know why but this dude makes it so easy to understand for me, i've watched thounsands of tutorials about this but this is the first one i understand! Thanks a lot man.

[lathikaran]

Awesome teaching
able to understand well
good work
keep going

[xXZorganStudioXx]

#include <iostream>
#define WINDOWS 1
#define MAC 2
#define LINUX 3
#define UBUNTU 4
#define OS 1
#if OS==WINDOWS
#define printIdentity() (std::cout << "You are using a WINDOWS Operating System\n")
#elif OS==MAC
#define printIdentity() (std::cout << "You are using a MAC Operating System\n")
#elif OS==LINUX
#define printIdentity() (std::cout << "You are using a LINUX Operating System\n")
#elif OS==UBUNTU
#define printIdentity() (std::cout << "You are using an UBUNTU Operating System\n")
#endif


int main(){

printIdentity();
system("pause");
return 0;
}

[theuberman]

So clear! I don't know what the hell my professor was trying to say!

[shoryasinghal]

How can we use this to make our template

[ThePositievx]

In which cases we should use #if #elif #else  and which cases if, else if, else?