C Program to Check Whether a Character is Alphabet or Not

In this C program, we will learn about how to check whether number is alphabet or not.

Required Knowledge

• C printf and scanf functions
• isalpha() function in C

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C program to check whether a character is alphabet or not

#include <stdio.h>  
  
int main() {  
    char character;
    printf("Enter a Character\n");  
    scanf("%c", &character);  
      
    if((character >= 'a' && character <= 'z')||
        (character >= 'A' && character <= 'Z')){
        printf("%c is an Alphabet\n", character);  
    } else {  
        printf("%c is Not an Alphabet\n", character);  
    }
  
    return 0;  
}

Output

Enter a Character
H
H is an Alphabet

Enter a Character
&
& is Not an Alphabet

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C program to check whether a character is alphabet or not using isalpha function

#include <stdio.h> 
#include <ctype.h> 
  
int main() {  
    char character;

    printf("Enter a Character\n");  
    scanf("%c", &character);  
      
    if(isalpha(character)) {  
        printf("%c is an Alphabet\n", character);  
    } else {  
        printf("%c is Not an Alphabet\n", character);  
    }
  
    return 0;  
}

Output

Enter a Character
g
g is an Alphabet

Enter a Character
+
+ is Not an Alphabet

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