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  1. #include <stdio.h>
  2.     void preInpost(int n){
  3.          if(n==0) return;
  4.          printf("Pre %d\n",n);
  5.          preInpost(n-1);
  6.          printf("In %d\n",n);
  7.          preInpost(n-1);
  8.          printf("Post %d\n",n);
  9.          return;
  10.    }
  11. int main(void) {
  12. 	int n;
  13.     printf("Enter the value: \n");
  14.     scanf("%d",&n);
  15.  
  16.       preInpost(n);
  17.     return 0;
  18. }
Success #stdin #stdout 0s 5288KB
comments (?)
stdin 
2
stdout 
Enter the value: 
Pre 2
Pre 1
In 1
Post 1
In 2
Pre 1
In 1
Post 1
Post 2
https://ideone.com/rh1iTO
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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