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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int32_t main() {
  5.     int N;
  6.     cin >> N;
  7.  
  8.     double X = sqrt(N); // sqrt la can 2
  9.     if(int(X) == X) {
  10.         cout << "N la so chinh phuong\n";
  11.     } else cout << "N khong la so chinh phuong\n";
  12.  
  13.     int x = int(X);
  14.     if(x * x == N) {
  15.         cout << "N la so chinh phuong\n";
  16.     } else cout << "N khong la so chinh phuong\n";
  17.  
  18.     return 0;
  19. }
  20.  
Success #stdin #stdout 0s 5284KB
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stdin
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Standard input is empty
stdout
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N khong la so chinh phuong
N khong la so chinh phuong
https://ideone.com/2jpunI
language:
C++14 (gcc 8.3)
created:
2 days ago
visibility:
public

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