C program to print all uppercase and lowercase letters in the alphabet

Write a C program to print all Uppercase and Lowercase letters in the alphabet:

In this example program, we will learn how to print the uppercase and lowercase letters in C programming language. We will use one for loop to print the characters. Let’s take a look into the program :

C program :

#include <stdio.h>

int main()
{
    //1
    char ch;

    //2
    printf("Uppercase characters : \n");
    //3
    for (ch = 'A'; ch <= 'Z'; ch++)
    {
        printf("%c ", ch);
    }

    //4
    printf("\nLowercase characters : \n");
    for (ch = 'a'; ch <= 'z'; ch++)
    {
        printf("%c ", ch);
    }

    return 0;
}

Explanation :

The commented numbers in the above program denotes the step number below :

1. Create one character variable ‘ch’.
2. Start printing the uppercase characters.
3. Start a for loop. Start the loop from ch = ‘A’ to ch = ‘Z’. And in the loop, increment the value of ch by 1. i.e. we will increase the ASCII value for that character . In the loop, print the character value or the value of ch.
4. Similarly, print all lowercase letters.

Output of the program :

Uppercase characters :
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Lowercase characters :
a b c d e f g h i j k l m n o p q r s t u v w x y z

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