false (C++) 

The keyword is one of the two values for a variable of type bool or a conditional expression (a conditional expression is now a true Boolean expression). For example, if i is a variable of type bool, the i = false; statement assigns false to i.

Example

// bool_false.cpp
#include <stdio.h>

int main()
{
    bool bb = true;
    printf_s("%d\n", bb);
    bb = false;
    printf_s("%d\n", bb);
}

Output

1
0

See Also

Reference

C++ Keywords