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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. string a;
  6. cin>>a;
  7. string b[8];
  8.  
  9. //cout<<b<<endl;
  10. int cnt=0;
  11. b[0]="2";
  12. b[0]=b[0]+a[0];
  13. cout<<b[0]<<endl;
  14. }
Success #stdin #stdout 0.01s 5520KB
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stdin
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123
stdout
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21
https://ideone.com/0bBoXW
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
public

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