The `true` constant is always 1. C11 §7.18 (3): > true which expands to the integer constant 1, And equality yields a 1 or 0. C11 §6.5.9 (3): > The == (equal

The `true` constant is always 1. C11 §7.18 (3): > true which expands to the integer constant 1, And equality yields a 1 or 0. C11 §6.5.9 (3): > The == (equal to) and != (not equal to) operators are analogous to the relational operators except for their lower precedence. Each of the operators yields 1 if the specified relation is true and 0 if it is false.