Program to convert letters to their corresponding telephone digits.
#include <iostream>
using namespace std;
int main()
{
char letter;
int counter = 0;
cout << "Program to convert letters to their corresponding telephone digits" << endl;
while (cin.get(letter) && counter < 7 ) {
if (letter != ' ' && letter >= 'A' && letter <= 'z') {
counter++;
if (letter > 'Z') {
letter = (int)letter-32;
}
if (counter == 4) {
cout << "-";
}
switch (letter) {
case 'A':
case 'B':
case 'C':
cout << "2";
break;
case 'D':
case 'E':
case 'F':
cout << "3";
break;
case 'G':
case 'H':
case 'I':
cout << "4";
break;
case 'J':
case 'K':
case 'L':
cout << "5";
break;
case 'M':
case 'N':
case 'O':
cout << "6";
break;
case 'P':
case 'Q':
case 'R':
case 'S':
cout << "7";
break;
case 'T':
case 'U':
case 'V':
cout << "8";
break;
case 'W':
case 'X':
case 'Y':
case 'Z':
cout << "9";
break;
default:
break;
}
}
}
return 0;
}
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