check whether a character is upper or lower or not
Table of Contents
In this article, we will discuss the concept of Check whether a character is upper or lower case or not in C language
In this post, we are going to learn how to write a program to check whether given character is Upper case or lower case or not using if else in C language
In this code, we are going to learn how to check the given character is Upper case or lower case or not 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 if(ch >='a' && ch<= 'z')
{//check if the given Alphabets is lower case
printf("'%c' is a Lower case Alphabet",ch);
}
else{
printf("'%c' is not an 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 character: A 'A' is an Upper case Alphabet
Case 2
Input any character: s 's' is a Lower case Alphabet
Case 3
Input any character: $ '$' is not an Alphabet
In this code, we are going to learn how to check the given character is Upper case or lower case or not 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 if(ch >=97 && ch<= 122)
{//check if the given Alphabets is lower case
printf("'%c' is a Lower case Alphabet",ch);
}
else{
printf("'%c' is not an 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 character: Y 'Y' is an Upper case Alphabet
Case 2
Input any character: u 'u' is a Lower case Alphabet
Case 3
Input any character: $ '$' is not an Alphabet
In this code, we are going to learn how to check the given character is Upper case or lower case or not using predefined library function in C language
Program 3
#include <stdio.h>
#include <ctype.h>
int main()
{
char ch;
//input character from user
printf("Input any character: ");
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);
}
else{
printf("'%c' is not an 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 character: D 'D' is an Upper case Alphabet
Case 2
Input any character: j 'j' is a Lower case Alphabet
Case 3
Input any character: * '*' is not an Alphabet
In this code, we are going to learn how to check the given character is Upper case or lower case or not using user-defined function in C language
Program 3
#include <stdio.h>
#include <stdlib.h>
void Ulcase(char ch);
//function prototype
int main()
{
char ch;
//character declaration
//input character from user
printf("Input any character: ");
scanf("%c",&ch);
Ulcase(ch);
//Caling the function
return 0;
}
void Ulcase(char ch){//function definition
if(ch >=65 && ch<= 90)
{//check if the given Alphabets is upper case
printf("'%c' is an Upper case Alphabet",ch);
}
else if(ch >=97 && ch<= 122)
{//check if the given Alphabets is lower case
printf("'%c' is a Lower case Alphabet",ch);
}
else{
printf("'%c' is not an Alphabet",ch);
}//Display, if the character is not an English alphabet
getch();
}
When the above code is executed, it produces the following result
Case 1
Input any character: K 'K' is an Upper case Alphabet
Case 2
Input any character: i 'i' is a Lower case Alphabet
Case 3
Input any character: % '%' is not an Alphabet
In this code, we are going to learn how to check the given character is Upper case or lower case or not using pre-defined function with pointer in C language
Program 5
#include <stdio.h>
#include <stdlib.h>
void Ulcase(char *ch);
//function prototype with pointer argument
int main()
{
char ch;
//character declaration
//input character from user
printf("Input any character: ");
scanf("%c",&ch);
Ulcase(&ch);
//Calling the function
return 0;
}
void Ulcase(char *ch){//function definition
if(*ch >=65 && *ch<= 90)
{//check if the given Alphabets is upper case
printf("Upper case Alphabet");
}
else if(*ch >=97 && *ch<= 122)
{//check if the given Alphabets is lower case
printf("Lower case Alphabet");
}
else{
printf("it is not an Alphabet");
}//Display, if the character is not an English alphabet
getch();
}
When the above code is executed, it produces the following result
Case 1
Input any character: D Upper case Alphabet
Case 2
Input any character: n Lower case Alphabet
Case 3
Input any character: % it is not an Alphabet
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