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  1. #include <iostream>
  2. #include <cstring>
  3. using namespace std;
  4.  
  5. const int TEN = 10;
  6.  
  7. int strToNumber(char s[9]) {
  8. 	int num = 0;
  9. 	int i = 0;
  10. 	while (s[i] != '\0') {
  11. 		num = num * TEN + (s[i] - '0');
  12. 		++i;
  13. 	}
  14. 	return num * num;
  15. }
  16.  
  17. int main() {
  18. 	char nr[9];
  19. 	cin.getline(nr, 9);
  20. 	cout << strToNumber(nr);
  21. }
Success #stdin #stdout 0.01s 5284KB
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https://ideone.com/mHe244
language:
C++14 (gcc 8.3)
created:
57 days ago
visibility:
public

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