# C Program to check the type of character entered

Write a program to find out that a given character is upper case, lower case, number or special character.

## Solution

• If an entered character is capital letter then, it displays the upper case.
Example: Input =H
Output: upper case letter
• If an entered character is small letter then, it displays the lower case letter.
Example: Input= g
Output: lower case letter
• If an entered character is number then, it displays the digit.
Example: Input=3
Output: digit
• If an entered character is a special character then, it displays the special character.
Example: Input= &
Output: special character

## Algorithm

Refer an algorithm given below to find out that a given character is upper case, lower case, number or special character.

Step 1 − Read input character from console at runtime.

Step 2 − Compute ASCII value of the character.

Step 3 − If the ASCII value of the character is in the range of 65 and 90, Then, print "Upper Case letter".

Step 4 − If the ASCII value of the character is in the range of 97 and 122, Then, print "Lower Case letter".

Step 5 − If the ASCII value of the character is in the range of 48 and 57, Then, print "Number".

Step 6 − Else, print "Symbol".

## Example

Following is the C program to find out that a given character is upper case, lower case, number or special character −

Live Demo

#include<stdio.h>
int main(){
char ch;
printf("enter a character:");
scanf("%c",&ch);
if(ch >= 65 && ch <= 90)
printf("Upper Case Letter");
else if(ch >= 97 && ch <= 122)
printf("Lower Case letter");
else if(ch >= 48 && ch <= 57)
printf("Number");
else
printf("Symbol");
return 0;
}

## Output

When the above program is executed, it produces the following output −

Run 1:
enter a single character:45
Number
Run 2:
enter a character:#
Symbol
Run 3:
enter a character:M
Upper Case Letter