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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. void byref(int &x) {
  6.   x++;
  7. }
  8.  
  9. void byptr(int *x) {
  10.   if (x != NULL) (*x)++;
  11. }
  12.  
  13. int main() {
  14.  
  15.   int x= 0;
  16.  
  17.   cout << x << endl;
  18.   byref(x);
  19.   cout << x << endl;
  20.   byptr(&x);
  21.   cout << x << endl;
  22.  
  23.   return 0;
  24. }
Success #stdin #stdout 0s 2852KB
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language:

						
C++14 (gcc 8.3)

					

					

						
created:
								
						
13 years ago

					

					

						
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