pointer constant 예문

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1. The typed pointer constant nullptr has been introduced with C + + 11.
2. C + + didn't adopt the same behavior, allowing only 0 as a null pointer constant.
3. C + + 11 corrects this by introducing a new keyword to serve as a distinguished null pointer constant : nullptr.
4. Since the dawn of C in 1972, the constant 0 has had the double role of constant integer and null pointer constant.
5. In C + +, while the NULL macro was inherited from C, the integer literal for zero has been traditionally preferred to represent a null pointer constant.