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  1. #include <iostream>
  2. #include <string>
  3.  
  4. using namespace std;
  5.  
  6. int main(){
  7.     string input, output, mapin ="abcdefghijklmnopqrstuvwxyz", 
  8.                           mapout="22233344455566677778889999";
  9.     cout << "Type 'stop' to stop or type your 7 letter message to be converted to numbers: " << endl;
  10.  
  11.     bool input_ok=true; 
  12.     while (cin >> input) {
  13. 		for (auto &c: input)
  14. 			c = tolower(c);    // lowercase,  just to simplify
  15. 		if (input=="stop" || output.size()==7) 
  16. 		    break;              // reasons to stop reading 
  17.  
  18.         for (auto &c:input) {
  19.         	auto pos=mapin.find(c); 
  20.         	if (pos==string::npos) {
  21.         		input_ok=false; 
  22.         		output += '?';
  23.         	}
  24.         	else output += mapout[pos];
  25.         	if (output.size()==7)
  26.         	    break;
  27.         }
  28.     }
  29. 	if (input_ok) {
  30.         cout << output.substr(0,3)  ;
  31.         if (output.size()>3) 
  32.         	cout << "-" << output.substr(3,7) ;
  33.         cout << endl << endl;
  34. 	}
  35. 	else {
  36.         cout << "incorrect input" << endl <<output<<endl;
  37.     }
  38.     return 0;
  39. }
Success #stdin #stdout 0s 4856KB
comments (?)
stdin 
I am content  stop
stdout 
Type 'stop' to stop or type your 7 letter message to be converted to numbers: 
426-2668
https://ideone.com/wqtv3z
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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