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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. void input() {
  5.   static char a = 0, b = 0;
  6.   // 48 - 0
  7.   // 49 - 1
  8.   // 50 - 2
  9.   cout<<":: "; // TO DO
  10.   while(scanf("%c", &a), a < 48 || a > 50) {
  11.     cout<<":: ";
  12.   }
  13.   while(scanf("%c", &b), b < 48 || b > 50) {
  14.     cout<<":: ";
  15.   }
  16. }
  17. int main() {
  18. 	input();
  19. 	return 0;
  20. }
Success #stdin #stdout 0s 3344KB
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:: :: :: ::
https://ideone.com/iuLPYE
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

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