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  1. #define printf print
  2. #include <stdio.h>
  3.  
  4. int main(void)
  5. {
  6. int a = 0;
  7.  
  8. a = a++ + ++a;
  9.  
  10. print("I'm using macro that redefine printf() function (%d).", a);
  11.  
  12. return 0;
  13. }
Success #stdin #stdout 0s 4320KB
stdin
Standard input is empty
stdout
I'm using macro that redefine printf() function (2).