Thread: Remove a letter from a string

I searched the forums and the internet but I haven't been able to find anything for what I want to do. Is there any easy yet begginer(ish) way to remove the last char of a string.
For example:
If I have a string: canyou

I want to do this in a loop..


canyou
-----
canyo
-----
cany
-----
can
----
ca
----
c

Declare a second string that's 1 element shorter. Get the value from strlen() and use it in a loop to read in all of the data from the original string to the second string, stopping before you get to the element you want to erase. Tack a null character on to the end, and you're all set.

Just a tip, don't use strlen() in the loop itself, otherwise it gets called every iteration, and your program slows down. Rather, assign it's return value to a variable, and use that variable in the loop.

Instead of modifying the string itself, just output what you want to output.

output all n letters
output (n-1) letters
.
.
.
output 2 letters
output 1 letter

No speed worries here

how do you just output 2 letters or 1 letter of string though.

Code:

char* str="foo";
cout << "Here are the first two letters: ";
for(int i=0; i < 2; ++i)
  cout << str[i];
cout << endl;
cout << "Here's the first letter: " << str[0] << endl;

Code:

/******************************************************

    Truncating a string by one each time
  
******************************************************/


#include <iostream>
#include <string.h>
#include <math.h>
#include <ctype.h>

int truncate(char[],int);

using namespace std;

int main()
{
    char array[81]={"FoobarisGerman?"};
    
    int size_of=strlen(array);
    
    //call function truncate 
    //passing the array and it's size into it
    truncate(array,size_of);
    int stop;
    cin>>stop;
    
    
}


//Declare function truncate
int truncate(char array[],int size)
{
    int k=size;
    for (int a=0; a<size; a++)
    {
        for (int b=0; b<k; b++)
        {
            
            cout<<array[b];
           
        }
         k=k-1;
         cout<<""<<endl;
    }
   
}

A appreciate the help everyone. I got it.