Using stdbool.h
suggest changeUsing the system header file stdbool.h
allows you to use bool
as a Boolean data type. true
evaluates to 1
and false
evaluates to 0
.
#include <stdio.h>
#include <stdbool.h>
int main(void) {
bool x = true; /* equivalent to bool x = 1; */
bool y = false; /* equivalent to bool y = 0; */
if (x) /* Functionally equivalent to if (x != 0) or if (x != false) */
{
puts("This will print!");
}
if (!y) /* Functionally equivalent to if (y == 0) or if (y == false) */
{
puts("This will also print!");
}
}
bool
is just a nice spelling for the data type _Bool
. It has special rules when numbers or pointers are converted to it.
Found a mistake? Have a question or improvement idea?
Let me know.
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