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  1. #include <stdio.h>
  2.  
  3. int a(int n){
  4.      int a,i;
  5.      a=0;
  6.      for(i=0;i<n;i++)
  7.      {
  8.      	a=2*a+3;
  9.      }
  10.  
  11.      return a;
  12. }
  13.  
  14. int main(void) {
  15. 	int n=2,result;
  16. 	result=a(n);
  17. 	printf("%d\n",result);
  18.  
  19. }
  20.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin 
Standard input is empty
stdout 
9
https://ideone.com/jXAF3b
language:
C (gcc 8.3)
created:
7 days ago
visibility:
public

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