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C++ Program to check whether a String is Palindrome or not

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robaa
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2022-11-26
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Write a C++ Program to check whether a String is Palindrome or not. Here’s simple C++ Program to check whether a String is Palindrome or not in C++ Programming Language.

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robaa
2022-11-26
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C++ Strings : 

String is a sequence of characters. char data type is used to represent one single character in C++. So if you want to use a string in your program then you can use an array of characters.

 
 

The declaration and definition of the string using an array of chars is similar to declaration and definition of an array of any other data type.

Any string ends with a terminating null character ‘\0’. An array definition in such a way should include null character ‘\0’ as the last element.

C++ provides following two types of string representations:

 
  • The C-style character string.
  • The string class type introduced with Standard C++.

The C-style character string originated within the C language and continues to be supported within C++. This string is actually a one-dimensional array of characters which is terminated by a null character ‘\0’. Thus a null-terminated string contains the characters that comprise the string followed by a null.

Here is source code of the C++ Program to check whether a String is Palindrome or not. The C++ program is successfully compiled and run(on Codeblocks) on a Windows system. The program output is also shown in below.

SOURCE CODE : :

/* C++ Program to check whether a String is Palindrome or not  */

#include<iostream>
using namespace std;

int main()
{
    int i,j,len,flag=1;
    char a[20];
    cout<<"\nEnter any string :: ";
    cin>>a;

    for(len=0;a[len]!='\0';++len);
        for(i=0,j=len-1;i<len/2;++i,--j)
        {
            if(a[j]!=a[i])
                flag=0;
        }

    if(flag==1)
        cout<<"\nThe Entered String [ "<<a<<" ] is Palindrome.\n";
    else
        cout<<"\nThe Entered String [ "<<a<<" ] is NOT Palindrome.\n";

    return 0;
}

OUTPUT : :

/* C++ Program to check whether a String is Palindrome or not  */

Enter any string :: RADAR

The Entered String [ RADAR ] is Palindrome.

Process returned 0

Above is the source code for C++ Program to check whether a String is Palindrome or not which is successfully compiled and run on Windows System.The Output of the program is shown above .

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