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  1. #include <stdio.h>
  2.  
  3. #define Square(x) ({ typeof (x) _x = (x); _x * _x; })
  4.  
  5. int main() {
  6.     int x = 5;
  7.     printf("%d\n", Square(x++));
  8.     printf("x now is %d!\n", x);
  9.     return 0;
  10. }
  11.  
Success #stdin #stdout 0s 1788KB
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Standard input is empty
stdout
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25
x now is 6!
https://ideone.com/OGu08W
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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