#include <stdio.h>
int main(int ac, char* av[]) {
int a = 2;
if (a) printf("a is true\n"); else printf("a is false\n");
if (a == true) printf("a is true\n"); else printf("a is false\n");
if (a != false) printf("a is true\n"); else printf("a is false\n");
if (static_cast<bool>(a) == true)
printf("a is true\n"); else printf("a is false\n");
return 0;
}
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