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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 −
#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
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