reading string without spaces and capital letters

[inferi9]

hi,
I am writng a program that takes a string and it must output if it is a palindrome,
A palindrome is a string that is spelled and read the same way forward and backward, it workes fine with one word but if there is spaces or capital lettersor commas it won't work I used getline but without any effect.here is the code.

#include <iostream>
#include <string>
using namespace std;
int main ()
 
{
    char s[100];
    int i,j;
    bool match=true;
    cin.getline(s,100,'\n');
    cout<<endl;
    i=0;
    j=strlen(s)-1;//because of the \0
 
 
 
    while(match&&(i<j))
    {
        if(s[i]!=s[j])
            match=false;
        i++;
        j--;
    }
    if (match)
        cout<<"It is a palindrome"<<endl;
    else
        cout<<"It is not a palindrome"<<endl;
 
    return 0;
}

can anyone help? thank you.

[MarshMallow]

Never rely to much on C getline if you have to do line-level character computations;use instead a getchar:getchar fetches a byte from the standard input;you should embed it in a while loop

while (c= getchar() != \n)
 do your computations
 

is that clear enough?I hope so
have a good sunday!

[weaknessforcats]

You need to ignore spaces in the compare inside your loop.

That is, if s[i] is a space you need a loop so skip all spaces until the next character. Ditto for s[j]. Maybe you write a a function to call here. It can take the input sttring and current position as arguments plus a third argument to say whether to go forwards are backwards in the string. It could return the position of the next non-space character, or -1 if you run out of string. Then you can call this function rather than using ++i and ++j in your loop.

BTW, your cin.getline is just fine. getchar() is a C carry over to C++ and is not required in this case.