3 replies to this topic

[irancplusplus]

hi
Are

true

and

false

literal constants?!

[gregwarner]

In C++, yes. In C, they are typically implemented as enumerations of 1 and 0, respectively.

[kernelcoder]

In C++, yes. In C, I just tried with the statement 'while(true);' with msvc compiler and got an compiling error "Error C2065: 'true' : undeclared identifier in 'somefile.c'".

So in C, to use true/false, you need to follow any of the two ways.

// Way 1
#define true 1
#define false 0

//Way 2
enum {false, true};

[icoheed]

@kernelcoder is right, but in C language you can also use boolean variables to implement the true or false condition. If you check into Stdbool.h header it may be a solution.