User prompt question

I'm trying to prompt for Y,y,Yes,yes - and I need help.

Here is what definitly doesn't work:

Code:

---

#include <iostream>

using std::cout;
using std::cin;


int main()
{
 
char c = ' ';

  while( c != 'y' || c != 'Y' || c != 'Yes' || c != 'yes' )
  {
      cout << "Continue? (Y/N): ";       
      cin.get(c);                          // Get character from user
      cin.ignore(1, '\n');        // Skip newline

      if( c == 'y' || c == 'Y' || c == 'yes' || c == 'Yes')
        cout << " you entered yes";
      else
                  cout << " you entered no";
          }
         
          return 0;
       
}

---

Thanks

This shows how to test for lower and upper case at the same time.

Down side - it accepts any word beginning with 'y' as being yes, so it needs a little refinement in that area.

Code:

---

#include <iostream>
#include <cctype>
using namespace std;

int main() {
    char buff[100];
    cin.getline(buff,sizeof buff);
    if ( toupper(buff[0]) == 'Y' ) {
        cout << "yes" << endl;
    }
}

---

Why not just use getline to read the entire string and then simply test the first character?

Code:

---

#include <cctype>
#include <iostream>
#include <string>

using namespace std;

bool keep_going()
{
  string reply;

  if ( getline ( cin, reply ) && tolower ( (unsigned char)reply[0] ) == 'y' ) {
    return true;
  }
  return false;
}

int main()
{
  while ( keep_going() ) {
    cout<<"Still going\n";
  }
}

---

would either of these work if the user entered: Ynoblaablaablaa?

They should only "continue" if the user entered 1 of 4 things:
Yes,yes,Y,y

Thanks again

Code:

---

string test = "y";
 
while(test == "y" ||
                test == "Y" ||
                test == "Yes" ||
                test == "yes")
{
//do something
cout << "to continue enter y, Y, Yes, or yes" << endl;
cin >> test;
}

---

>would either of these work if the user entered: Ynoblaablaablaa?
Yes, with minor changes:

Code:

---

bool keep_going()
{
  string reply;

  if ( getline ( cin, reply ) ) {
    if ( reply == "y" || reply == "Y" || reply == "yes" || reply == "Yes" ) {
      return true;
    }
  }
  return false;
}

---

Thank you guys for your time - I think either of these will work great, and while waiting, I actually came up with a solution of my own that is similar-

Hopefully one day I'll be the one replying with solutions instead of posting all the questions...

Code:

---

cout << "enter response";
cin >> response;

string a = response;

if (a == "yes" || a == "Yes" || a == "y" || a == "Y")
cout << "you entered yes";

else cout << "you entered no";

---