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  1. #include <stdio.h>
  2.  
  3.    int stair(int n){
  4.    if(n==1) return 1;
  5.    if(n==2) return 2;
  6.    int totalways= stair(n-1)+stair(n-2);
  7.    return totalways;
  8.  
  9.  }
  10.  
  11. int main() {
  12. 	int n;
  13.     printf("Enter the value of n: \n");
  14.     scanf("%d",&n);
  15.     int ways= stair(n);
  16.     printf("%d",ways);
  17. 	return 0;
  18. }
Success #stdin #stdout 0.01s 5284KB
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stdin
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5
stdout
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Enter the value of n: 
8
https://ideone.com/UJ0r21
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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