Thread: Putback() help

Hi!

Im trying to write a code that replaces the first letter of every line with a capital letter.
So for starters that would be the part of the code for replacing.

The problem:
for ex. input : abc
output: aAbBC

It only replaces the last letter and not the first ones.
Maybe im using the wrong funtion for that. Thanks.

Code:

#include <iostream>
using namespace std;

int main()
{
 char ch;
 cout << "Enter a phrase: "; 
 while ( cin.get(ch))
{
           if (ch == 'a')
                  cin.putback('A');
                  if (ch == 'b')
                  cin.putback('B');
                  if (ch == 'c')
                  cin.putback('C');

          else
                 cout << ch;

}
  system("PAUSE");
  return 0;
}

Another example of why good indentation and brace usage will prevent dumb mistakes.

Code:

if (ch == 'a') {
  cin.putback('A');
}

if (ch == 'b') {
  cin.putback('B');
}

if (ch == 'c') {
  cin.putback('C');
} else {
  cout << ch;
}

Your 'else' is not the exception to ALL your if statements, only the last one.

Thanks a lot Salem and Grumpy , that helped me a lot.

And how do i convert it to upper case without "output()"?

Code:

char ch[222];
cout << "Enter a phrase: ";
while ( cin.get(ch[222]))
{
  if (ch[0] == 'a')
               {
               ch[0] = 'A';
               }

Like this?