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  1. // factorial_r.c
  2. #include <stdio.h>
  3.  
  4. int factorial(int n)
  5. {
  6. //	printf("f")
  7. 	if(n==0)
  8. 		return 1;
  9.     printf("Function call %d\n", n);
  10. 	return n*factorial(n-1);
  11. }
  12.  
  13. int main(void)
  14. {
  15. 	int n;
  16.     printf("Enter a positive number: ");
  17.     scanf("%d", 100);
  18. 	printf("\n%d! = %d\n", n, factorial(n));
  19. 	return 0;
  20. }
  21.  
Success #stdin #stdout 0.01s 5284KB
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stdin
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Standard input is empty
stdout
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Enter a positive number: 
0! = 1
https://ideone.com/nnlA8B
language:
C (gcc 8.3)
created:
10 days ago
visibility:
public

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