Booleans

stdbool.h provides the bool, true, and false names for clear yes/no state.

booleans.c

#include <stdbool.h>
#include <stdio.h>

int main(void) {
    bool enabled = ;
    const char *label = enabled ? "enabled" : "disabled";

    printf("flag=%s\n", label);
    return 0;
}

#include <stdbool.h>
#include <stdio.h>

int main(void) {
    bool enabled = ;
    const char *label = enabled ? "enabled" : "disabled";

    printf("flag=%s\n", label);
    return 0;
}

stdbool `#include <stdbool.h>` defines `bool`, `true`, and `false`.

ternary The ternary operator chooses one of two values based on a condition.