Uppercase Lowercase & Special Character

July 1, 2019

When a user enters a character, the system has to check wheatear it is uppercase, lower case or a special character. For instance, if the entered character is a, it is of the lower case. If the user enters A, it is of upper case, and if the user enters 0, it is a special character. 

Algorithm to check whether the entered character is Uppercase, Lowercase or Special Character 

Step 1. Start 

Step 2. Enter a character 

Step 3. Check whether the character lies between A to Z, if true, print “it is an uppercase letter.” 

Step 4. Check whether the character lies between a to z, if true, print “it is a lowercase letter.” 

Step 5. If none of the above conditions is fulfilled, print “it is a special character” 

Step 6. Stop 

C Program to check wheatear the entered character is Uppercase, Lowercase or Special Character   

// C program to check a character   

#include    

void PrepInsta(char ch)  

{  

    if (ch >= 'A' && ch <= 'Z') printf("\n%c is in upper case ", ch); else if (ch >= 'a' && ch <= 'z')  

        printf ("\n%c is in lower case ", ch);  

    else 

        printf ("\n%c is not an alphabet",  

               ch);  

}  

// Driver Code  

int main()  

{  

    char ch;  

    // Entering the character  

    ch = 'A';  

      // Check the character  

    PrepInsta(ch);  

    // Get the character  

    ch = 'a';  

    // Check the character  

    PrepInsta(ch);  

    // Get the character  

    ch = '0';  

    // Check the character  

    PrepInsta(ch);  

    return 0;  

}

Output

S is an upper case character 

g is a lower case character 

9 is not an alphabet