C++ programming code to check whether the character is Alphabet or not

In this post, we will discuss the concept of C++ programming code to check whether the character is Alphabet or not

Here, we are going to learn how to find whether the given character is Alphabet or not in C++ programming language

What is ASCII

In the C++ programming language, all the character variables hold an ASCII value for computer usage.ASCII value is represented by integer values between 0 to 127.
The ASCII value of lowercase Alphabets are from 97 to 122 and The ASCII value of uppercase Alphabets are from 65 to 90

C++ code to check the character is Alphabet or not using if-else

This concept is done using three ways

using if-else statements
Using ternary operator
Using ASCII value

C++ code to check the character is Alphabet or not using if-else

The program allows the user to enter a character thereafter it will check and display the result of the given character whether it is an alphabet or non-alphabet using the if-else statements in C++ programming language

Program 1

#include <iostream>
#include <conio.h>
using namespace std;

int main()
{
    char ch;
//Asking the user to enter the character
    cout<<"Enter a caracter as you wish\n";
    //Storing the entered character in variable ch
   cin>>ch;
    if((ch>='A' && ch<='Z')||(ch>='a' && ch<='z')){
cout<<ch<<" is an Alphabet: ";
// If the character  is an alphabet, it is displayed
}
else
{
cout<<ch<<" is not an Alphabet: ";
}// If the character  is not an alphabet, it is displayed
getch();
    return 0;
}

When the above code is executed it produces the following result

Case 1

Enter a character as you wish
X
X is an Alphabet

Case 2

Enter a character as you wish
d
d is an Alphabet

Case 3

Enter a character as you wish
&
& is not an Alphabet

Approach

In the program, the user is asked to enter a character and entered character is stored in character variable ch
The program evaluates whether the entered character is an Alphabet or not, using if statements
If the given character is an Alphabet The program displays the output “it is an Alphabet” and if the given character is not an Alphabet it will display”it is not an Alphabet”

C++ code to check the character is Alphabet or not using ternary operator

The program allows the user to enter a character thereafter it will check and display the result of the given character whether it is an alphabet or non-alphabet using the Ternary operator in C++ language

Program 2

#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
    char ch;
    //Ask input the character
    cout<<"Enter the character\n";
    //Get the input and store the variable ch
    cin>>ch;

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

? cout<<"It is an Alphabet"
: cout<<"It is not an Alphabet";
getch();
    return 0;
}

When the above code is executed it produces the following result

Case 1

Enter the character
B
It is an Alphabet

Case 2

Enter the character
g
It is an Alphabet

Case 3

Enter the character
%
It is not an Alphabet

Approach

In the program, the user is asked to enter a character and entered character is stored in character variable ch
The program evaluates whether the entered character is an Alphabet or not, using ternary operator
If the given character is an Alphabet The program displays the output “it is an Alphabet” and if the given character is not an Alphabet it will display”it is not an Alphabet”

C++ code to check the character is Alphabet or not using Ascii value

The program allows the user to enter a character thereafter it will check and display the result of the given character whether it is an alphabet or non-alphabet using ASCII value

Program 3

#include <iostream>
#include <conio.h>

using namespace std;

int main()
{
    char ch;
    cout<<"Enter any character\n";
    cin>>ch;

    if((ch>=97 && ch<=122)||(ch>=65 && ch<=90)){
cout<<ch<<" is an Alphabet";
}
else
{
cout<<ch<<" is not an Alphabet";
}
getch();
    return 0;
}

When the above code is executed it produces the following result

Case 1

Enter any character
M
M is an Alphabet

Case 2

Enter any character
t
t is an Alphabet

Case 3

Enter any character
#
# is not an Alphabet

Approach

In the program, the user is asked to enter a character and entered character is stored in character variable ch
The program evaluates whether the entered character is an Alphabet or not, using ASCII value
If the given character is an Alphabet The program displays the output “it is an Alphabet” and if the given character is not an Alphabet it will display”it is not an Alphabet”

The Alphabet has ASCII values between 65 to 90(capital letters) and 97 to 122 (small letters)

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