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  1. #include <stdio.h>
  2.  
  3. void fun(int x, int indent)
  4. {
  5.     printf("%-*sfun(%d)\n", indent, "", x);
  6.     if (x > 0)
  7.     {
  8.         fun(--x, indent + 2);
  9.         printf("%-*s%d\n",  indent+2, "", x);
  10.         fun(--x, indent + 2);
  11.     }
  12. }
  13.  
  14. int main()
  15. {
  16.     int a = 4;
  17.     fun(a,0);
  18.     getchar();
  19.     return 0;
  20. }
Success #stdin #stdout 0s 2252KB
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stdin
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Standard input is empty
stdout
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fun(4)
  fun(3)
    fun(2)
      fun(1)
        fun(0)
        0
        fun(-1)
      1
      fun(0)
    2
    fun(1)
      fun(0)
      0
      fun(-1)
  3
  fun(2)
    fun(1)
      fun(0)
      0
      fun(-1)
    1
    fun(0)
https://ideone.com/n9lk9S
language:
C99 (gcc 8.3)
created:
10 years ago
visibility:
secret

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