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  1. #include <stdio.h>
  2.  
  3. int power (int i) {
  4.  
  5.   int square (int x) {
  6.     return x * x;
  7.   }
  8.  
  9.   int cube (int x) {
  10.     return x * x * x;
  11.   }
  12.  
  13.   return (i) ? cube : square;
  14. }
  15.  
  16. #define SQUARE 0
  17. #define CUBE  !0
  18.  
  19. int main () {
  20.  
  21.   int (*cube) (int) = power (CUBE);
  22.   int (*square) (int) = power (SQUARE);
  23.  
  24.   printf ("==================================\n");
  25.   printf ("square(5) = %u, cube(5) = %u, \n", square (5), cube (5));
  26.   printf ("==================================\n");
  27.   printf ("square(3) = %u, cube(3) = %u, \n", square (3), cube (3));
  28.   printf ("==================================\n");
  29.  
  30.   return 0;
  31.  
  32. }
Runtime error #stdin #stdout 0s 9424KB
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Standard input is empty
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Standard output is empty
https://ideone.com/557ULM
language:
C (gcc 8.3)
created:
5 years ago
visibility:
public

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