Question

How to check if pointer is NULL in C++

Answer 1

#include <iostream>

int main() {
    int i = 12;
    int *p = &i;
 
    if (p != nullptr) {
        std::cout << *p;
    }
    else {
        std::cout << "p is NULL";
    }
    
    return 0;
}




/*
run:

12

*/

 

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