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  1. #include <iostream>
  2. #include <string>
  3. #include <sstream>
  4. using namespace std;
  5.  
  6. template<typename T>
  7. void Get(T& toSet, std::string prompt) // read from cin
  8. {
  9. 	std::string nextIn;
  10. 	cout << prompt;
  11. 	getline(cin >> std::ws, nextIn);
  12. 	istringstream inStream(nextIn);
  13. 	while(cin && !(inStream >> toSet))
  14. 	{
  15.         inStream.clear();
  16.         cout << "Invalid Input. Try again.\n" << prompt;
  17.     	getline(cin >> std::ws, nextIn);
  18.     	inStream.str(nextIn);   
  19.     }
  20.     if (!cin)
  21.     {
  22.     	cerr << "\nFailed to get proper input. Exiting\n";
  23.     	exit(1);
  24.     }
  25. }
  26.  
  27. int main() 
  28. {
  29. 	string name;
  30. 	int num1 = -1;
  31.     cout << "\nHello!\n";
  32.     Get(name, "\nTell me your name?:");
  33.     cout << "\nWell well well, if it isn't "<< name << "!\n";
  34.    	Get(num1, std::string("\nEnter a NUMBER, ") + name + ": ");
  35.     cout << "\nYou entered number: " << num1 << std::endl;
  36.  
  37.     return 0;
  38. }
Success #stdin #stdout 0s 3284KB
comments (?)
stdin
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Kevin ferer 
asdf asdfasdf  asdf

asd
 '

a   asdf asdfsdfd d
100
stdout
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Hello!

Tell me your name?:
Well well well, if it isn't Kevin!

Enter a NUMBER, Kevin: Invalid Input. Try again.

Enter a NUMBER, Kevin: Invalid Input. Try again.

Enter a NUMBER, Kevin: Invalid Input. Try again.

Enter a NUMBER, Kevin: Invalid Input. Try again.

Enter a NUMBER, Kevin: 
You entered number: 100
https://ideone.com/0XodZ0
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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