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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int main() {
  6.  
  7. int **a = nullptr;
  8.  
  9. return 0;
  10. }
Compilation error #stdin compilation error #stdout 0s 0KB
stdin
Standard input is empty
compilation info
prog.cpp: In function 'int main()':
prog.cpp:7:13: error: 'nullptr' was not declared in this scope
stdout
Standard output is empty