HTML & JS
#include <stdio.h>
#include <stdbool.h>

int main() 
{
	bool a = true;
	printf("%zu\n", sizeof(bool));  // Ok
	printf("%zu\n", sizeof(a));     // Ok
	printf("%zu\n", sizeof(a ? true : false)); // Why 4?
	return 0;
}

Generated URL:

Output:

1
1
4
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