C Program for Display Alphabets using ASCII value

In this article, we will discuss the concept of C Program for Display Alphabets using ASCII value

In this post, we are going to learn how to display all the upper case(A to Z) and lower case (a to z) Alphabets using ASCII in C programming language

C Program for Display Alphabets in Java using ASCII value — Display Alphabets using ASCII

ASCII value of upper case Alphabets letters are between 65 – 90
ASCII value of lower case Alphabets letters are between 97 – 122

Program for display Alphabets using for loop

The program displays all the upper case and lower case alphabet letters between a to z using for loop in C language

Program 1

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

int main()
{
    char ch;//char variable declaration
//Printing upper case Alphabets
printf("Uppercase Alphabets are: \n");
for(ch=65; ch<=90; ch++){
printf("%c",ch);
printf(" ");
//display uppercase Alphabets with space
}
printf("\n");//move to next line

//Printing lower case Alphabets
printf("\nLowercase Alphabets are: \n");
for(ch=97; ch<=122; ch++){
printf("%c",ch);
printf(" ");
//display lowercase Alphabets with space
}

    //printf("Hello world!\n");
    getch();
    return 0;
}

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

C Program for Display Alphabets using ASCII value — Display Alphabets

In the above program, we are using two for loops, one is used to print upper case letters and another to print lower case letters

Approach

We will declare a counter variable “ch” of the for loop and it is initialized by “65”(for print upper case) or “97” (for print lower case);
The program checks the given condition(ch<=90 (upper case) or ch<=122(lower case) if the condition is true, alphabets will be printed
if the condition is false – loops will be terminated

Program for display Alphabets using while loop

The program displays all the upper case and lower case alphabet letters between a to z using while loop in C language

Program 2

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

int main()
{
    char ch;//char variable declaration
//Printing upper case Alphabets
printf("Uppercase Alphabets are: \n");
ch=65;
while(ch<=90){
printf("%c",ch);
printf(" ");
//display uppercase Alphabets with space
 ch++;
}
printf("\n");//move to next line

//Printing lower case Alphabets
printf("\nLowercase Alphabets are: \n");
ch=97;
while(ch<=122){
printf("%c",ch);
printf(" ");
//display lowercase Alphabets with space
 ch++;
}

    //printf("Hello world!\n");
    getch();
    return 0;
}

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

In the above program, we are using two while loops, one is used to print upper case letters and another to print lower case letters

Approach

We will declare a counter variable “ch” of the while loop and it is initialized by “65”(for print upper case) or “97” (for print lower case);
The program checks the given condition(ch<=90 (upper case) or ch<=122(lower case) if the condition is true, alphabets will be printed
if the condition is false – loops will be terminated

Program for print Alphabets using do-while loop

The program displays all the upper case and lower case alphabet letters between a to z using the do-while loop in C language

Program 3

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

int main()
{
    char ch;//char variable declaration
//Printing upper case Alphabets
printf("Uppercase Alphabets are: \n");
ch=65;
do{
printf("%c",ch);
printf(" ");
//display uppercase Alphabets with space
 ch++;
}while(ch<=90);
printf("\n");//move to next line

//Printing lower case Alphabets
printf("\nLowercase Alphabets are: \n");
ch=97;
do{
printf("%c",ch);
printf(" ");
//display lowercase Alphabets with space
 ch++;
}while(ch<=122);

    //printf("Hello world!\n");
    getch();
    return 0;
}

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

In the above program, we are using two do-while loops, one is used to print upper case letters and another to print lower case letters

Approach

We will declare a counter variable “ch” of the do-while loop and it is initialized by “65”(for print upper case) or “97” (for print lower case);
The program checks the given condition(ch<=90 (upper case) or ch<=122(lower case) if the condition is true, alphabets will be printed
if the condition is false – loops will be terminated

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