C program: check whether given Alphabet is upper case or lower case

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C program: check whether given Alphabet is upper case or lower case

In this article, we will discuss the concept of C Program: check whether given Alphabet is upper or lower case

In this post, we are going to learn how to write a program to check whether given Alphabet is Upper case or lower case using if else in C language

Code to check given Alphabet is Upper or Lower

Code to check given Alphabet is Upper or Lower case, using if statements

In this code, we are going to learn how to check the given Alphabet is Upper case or lower case using if else statements in C language

Program 1

#include <stdio.h>
#include <stdlib.h>

int main()
{
    char ch;
    //input character from user
    printf("Input any character: ");
    scanf("%c",&ch);
    if(ch >='A' && ch<= 'Z')
    {//check if the given Alphabets is upper case
        printf("'%c' is an Upper case Alphabet",ch);
    }
    else{
        printf("'%c' is a lower case Alphabet",ch);
    }//Display, if the character is not an English alphabet
    getch();
    return 0;
}

When the above code is executed, it produces the following result

Case 1

Input any Alphabet: M
'M' is an Upper case  Alphabet

Case 2

Input any Alphabet: x
'x' is a Lower case  Alphabet

Code to check given Alphabet is Upper or Lower case, using Ascii

In this code, we are going to learn how to check the given Alphabet is Upper case or lower case using Ascii value in C language

Program 2

#include <stdio.h>
#include <stdlib.h>

int main()
{
    char ch;
    //input character from user
    printf("Input any character: ");
    scanf("%c",&ch);
    if(ch >=65 && ch<= 90)
    {//check if the given Alphabets is upper case
        printf("'%c' is an Upper case Alphabet",ch);
    }
    else{
        printf("'%c' is a lower case Alphabet",ch);
    }//Display, if the character is not an English alphabet
    getch();
    return 0;
}

When the above code is executed, it produces the following result

Case 1

Input any Alphabet: O
'O' is an Upper case  Alphabet

Case 2

Input any Alphabet: p
'p' is a Lower case  Alphabet

Code to check given Alphabet is Upper or Lower case, using library function

In this code, we are going to learn how to check the given Alphabet is Upper case or lower case using per-defined library function in C language

Program 3

#include <stdio.h>
#include <ctype.h>

int main()
{
    char ch;
    //input character from user
    printf("Input any Alphabet: ");
    scanf("%c",&ch);
    if(isupper(ch))
    {//check if the given Alphabets is upper case
        printf("'%c' is an Upper case Alphabet",ch);
    }
    else if(islower(ch))
    {//check if the given Alphabets is lower case
        printf("'%c' is a Lower case Alphabet",ch);
    }
    getch();
    return 0;
}

When the above code is executed, it produces the following result

Case 1

Input any Alphabet: W
'W' is an Upper case  Alphabet

Case 2

Input any Alphabet: u
'u' is a Lower case  Alphabet

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C program: check whether given Alphabet is upper case or lower case

Code to check given Alphabet is Upper or Lower

Code to check given Alphabet is Upper or Lower case, using if statements

Code to check given Alphabet is Upper or Lower case, using Ascii

Code to check given Alphabet is Upper or Lower case, using library function

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