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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. class square
  5. {
  6.   public:void area(int r);
  7.   };
  8. void square::area(int r)
  9. {  cout<<"Area="<<(r*r);
  10. }
  11.  
  12.  
  13.  
  14. int main()
  15. {
  16.     square sc;
  17.     int length;
  18.     cin>>length;
  19.     sc.area(length);
  20.  
  21. }
  22.  
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
stdout
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Area=0
https://ideone.com/kfvs6t
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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