fork download 
  1. #include <stdio.h>
  2.  
  3. #define A0(x, i) (i)*10 + (*(x)-'0')
  4. #define A1(x, i) (*(x + 1) ? A0(x + 1, (i) * 10 + *(x)-'0') : (i) * 10 + *(x)-'0')
  5. #define A2(x, i) (*(x + 1) ? A1(x + 1, (i) * 10 + *(x)-'0') : (i) * 10 + *(x)-'0')
  6. #define A3(x, i) (*(x + 1) ? A2(x + 1, (i) * 10 + *(x)-'0') : (i) * 10 + *(x)-'0')
  7. #define A4(x, i) (*(x + 1) ? A3(x + 1, (i) * 10 + *(x)-'0') : (i) * 10 + *(x)-'0')
  8. #define A5(x, i) (*(x + 1) ? A4(x + 1, (i) * 10 + *(x)-'0') : (i) * 10 + *(x)-'0')
  9. #define A6(x, i) (*(x + 1) ? A5(x + 1, (i) * 10 + *(x)-'0') : (i) * 10 + *(x)-'0')
  10. #define A7(x, i) (*(x + 1) ? A6(x + 1, (i) * 10 + *(x)-'0') : (i) * 10 + *(x)-'0')
  11. #define A8(x, i) (*(x + 1) ? A7(x + 1, (i) * 10 + *(x)-'0') : (i) * 10 + *(x)-'0')
  12. #define A9(x, i) (*(x + 1) ? A8(x + 1, (i) * 10 + *(x)-'0') : (i) * 10 + *(x)-'0')
  13. #define A10(x, i) (*(x + 1) ? A9(x + 1, (i) * 10 + *(x)-'0') : (i) * 10 + *(x)-'0')
  14. #define A11(x, i) (*(x + 1) ? A10(x + 1, (i) * 10 + *(x)-'0') : (i) * 10 + *(x)-'0')
  15. #define A12(x, i) (*(x + 1) ? A11(x + 1, (i) * 10 + *(x)-'0') : (i) * 10 + *(x)-'0')
  16. #define A13(x, i) (*(x + 1) ? A12(x + 1, (i) * 10 + *(x)-'0') : (i) * 10 + *(x)-'0')
  17. #define A14(x, i) (*(x + 1) ? A13(x + 1, (i) * 10 + *(x)-'0') : (i) * 10 + *(x)-'0')
  18. #define A15(x, i) (*(x + 1) ? A14(x + 1, (i) * 10 + *(x)-'0') : (i) * 10 + *(x)-'0')
  19.  
  20. #define GAY(x) #x
  21. #define STR(x) GAY(x)
  22.  
  23. #define XXX(x) A15(STR(x), 0)
  24.  
  25. int main(int argc, char *argv[])
  26. {
  27.     printf("%d\n%d\n%d\n%d\n", XXX(01), XXX(08), XXX(0123), XXX(0123456789));
  28.     return 0;
  29. }
  30.  
Success #stdin #stdout 0s 2112KB
comments (?)
stdin 
Standard input is empty
stdout 
1
8
123
123456789
https://ideone.com/GWp3OP
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!