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  1. #include <iostream>
  2. using namespace std;
  3. int main () {
  4.     int N;
  5.     cout << " Input an integer:";
  6.     if(!(cin >> N)) {
  7.         cout << "Input a valid number!" << endl;
  8.         cout << "N = " << N << endl;
  9.     }
  10.     else {
  11.         cout << " The integer entered is:" << N << endl;
  12.     }
  13.     return 0;
  14. }
Success #stdin #stdout 0s 3344KB
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stdin
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hello
stdout
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 Input an integer:Input a valid number!
N = 0
https://ideone.com/nRzrUW
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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