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  1. #include <stdio.h>
  2.  
  3. int binpow (int a, int n) {
  4. 	if (n == 0)
  5. 		return 1;
  6. 	if (n % 2 == 1)
  7. 		return binpow (a, n-1) * a;
  8. 	else {
  9. 		int b = binpow (a, n/2);
  10. 		return b * b;
  11. 	}
  12. }
  13.  
  14. int main(){
  15.  
  16. 	int a;
  17. 	int n;
  18.  
  19. 	scanf("%d", &a);
  20. 	scanf("%d", &n);
  21.  
  22. 	int res;
  23. 	res = binpow(a, n);
  24.  
  25. 	printf("%d", res);
  26.  
  27. 	return 0;
  28. }
Success #stdin #stdout 0s 4344KB
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https://ideone.com/QTLRfr
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

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