trouble adding content to string

**letsgetaway** · 01-20-2008

I am supposed to 1 space between letters and 3 spaces between words in a string (not c-style string). I know how to check for letters and add a space between each one. The problem is I'm not sure how to add the space between letters without accidentally erasing a letter.

for example....

"hey"

would become

"h y" from my code below.

Any tips how I can accomplish "h e y"?

Code:

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

int main()
{
    
    
    string one = "hey you";


         //Checks for letters and inserts 1 space next to each letter until it reaches the end of the string
         for (int i=0; j < one.length(); i++)
         {
              if (isalpha(one[i])) //if character at one[i] is an alphabet, insert a space at one[i+1]
               one[j+1] = ' '; 
         }


    
    cout << one << endl;
  
    return 0;
    
}

**Dino** · 01-20-2008

I would approach the problem with string methods: string.insert() for adding a blank between letters and string.replace() to change a single blank into three blanks.

Todd

**letsgetaway** · 01-20-2008

Ok thanks I'll give it a try. Those string library functions aren't covered well in my course's book so I had no idea how to use them. And a hello to a fellow houstonian.

**CornedBee** · 01-20-2008

There's no need to change a single blank into three. Just insert a blank between every two characters. A single blank will automatically become three.

**Dino** · 01-20-2008

Good point Cornedbee!

letsgetaway - I'm an ex-Houstonian!! Once you move to Katy, there's no going back!

**letsgetaway** · 01-20-2008

Originally Posted by Todd Burch

Good point Cornedbee!

letsgetaway - I'm an ex-Houstonian!! Once you move to Katy, there's no going back!

LOL! I guess you have a point since they close roads to Katy every year. j/k I've actually never been there for the 2 years I've been in Houston..well more like Spring.

**swgh** · 01-20-2008

You can also use strlen with a char array to acomplish a similar feat.

Code:

for ( int i = 0; i < strlen(word); i++ )
{
   std::cout << word << "   "; // number of spaces beteen the quotes is the amount of 
                                              // spaces the characters are spaced
}

**letsgetaway** · 01-20-2008

I'm still lost how to actually use those functions. This program is a simple form but actually I'm reading a line from a file one character at a time.

**Dino** · 01-20-2008

If you are reading a char at a time, in a loop, just append the character you read to a new string, and then append a blank to the new string, and then keep repeating your loop.

(I went to High School in Spring - graduated 1980... before many on this forum were born).

Todd

**Dino** · 01-20-2008

Code:

#include<iostream>
#include<string>
#include<cctype>   // you don't need this 
using namespace std;

int main()
{
    
    
    string one = "hey you";
    create a second string here 

         //Checks for letters and inserts 1 space next to each letter until it reaches the end of the string
         for (int i=0; j < one.length(); i++) // where did "j" come from?   Use i  
         {
              // No need to test for isalpha.  Just append the char to the new string, followed by a blank 
              if (isalpha(one[i])) //if character at one[i] is an alphabet, insert a space at one[i+1]
               one[j+1] = ' '; 
         }


    
    cout << one << endl;
  
    return 0;
    
}

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