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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main()
  5. {
  6.   char ch; cin >> ch;
  7.   if (ch == 'A') cout << "T\n";
  8.   else if (ch == 'T') cout << "A\n";
  9.   else if (ch == 'C') cout << "G\n";
  10.   else cout << "C\n";
  11.  
  12.   return 0;
  13. }
Success #stdin #stdout 0s 5308KB
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Standard input is empty
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C
https://ideone.com/YJAIVv
language:
C++14 (gcc 8.3)
created:
5 days ago
visibility:
public

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