C++ Program to check whether a character is uppercase, lowercase ,digit or special character

March 19, 2025

Character is uppercase ,lowercase ,digit or special character

Here we will discuss C++ program to check whether a character is uppercase, lowercase ,digit or special character. As there are different types of character in C++, so we’ll learn to write a code to do so.

C++ Program to check whether a character is uppercase, lowercase ,digit or special character

Program to check whether a character is uppercase, lowercase ,digit or special character

In C++ programming language a char type variable can store many different types of values ,128 values in total, single value at a time. Each value has been assigned a code by which they can be identified and that is called ASCII code.

  • Alphabets
    • Uppercase( between 65 to 90 )
    • Lowercase( between 97 to 122)
  • Digits (between 48 to 57)
  • Special Characters (all the remaining in between 0 to 127)
Character is uppercase ,lowercase ,digit or special character

Working:

  • User gives an input.
  • The input is stored in a char type variable say prep.
  • prep is then checked using the if else-if statement.
  • For uppercase alphabets
if((prep >= 65) && (prep <= 90))
  • For lowercase alphabets
else if((prep >= 97) && (prep <= 122))
  • For digits
else if((prep >= 48) && (prep <= 57))
  • All others will be the special characters.

C++ Introduction

History of C++

Structure of a C++ Program

Array in C++ 

Program to check armstrong number or not

C++ code

Run 
//C++ program
//Character is alphabet, a digit, or a special character
#include <iostream>
using namespace std;
int main()
{
    char charCheck;
    cout<<"Enter a character: "; cin>>charCheck;
    //for uppercase alphabets
    if((charCheck >= 65) && (charCheck <= 90)) 
    {
        cout<<charCheck<<" is Uppercase Alphabet"; } // for lowercase alphabets else if((charCheck >= 97) && (charCheck <= 122))
    {
        cout<<charCheck<<" is Lowercase Alphabet"; } //for digits else if((charCheck >= 48) && (charCheck <= 57))
    {
        cout<<charCheck<<" is a Digit";
    }
    //all remaining are special characters
    else
    {
        cout<<charCheck<<" is a Special Character";
    }
    return 0; 
}

Output:

Enter a character: @

@ is a Special Character

Getting Started