C++ Program to Check Whether a Character is Alphabet or Not

This article contains C++ program to check whether a character is alphabet or not. A C++ compiler determines characters by its ASCII Values. The alphabetic characters have ASCII values between 65 to 92 or 97 to 122. Alphabets can be of either lowercase or uppercase. 

C++ program to check whether a character is alphabet or not

#include<iostream>

using namespace std;

int main()

{

    char n;

    cout<<"Enter a number : ";

    cin>>n;

    if(n>='a'&& n<='z' || n>='A' && n<='Z')

        cout<<endl<<n<<" is an alphabet";

    else

        cout<<endl<<n<<" is not an alphabet";

    return 0;

}

OUTPUT 1:

Enter a number : a

a is an alphabet

OUTPUT 2:

Enter a number : B

B is an alphabet

OUTPUT 3:

Enter a number : *

* is not an alphabet

OUTPUT 4:

Enter a number : 5

5 is not an alphabet