Answer :

#include<stdio.h>   //header file contains the function,decleraction and macro defination of key words used in code.

char alpha;  //adressing the variables

int main ()

{

printf("Enter a chracter you like\t"); //output

scanf("%c",&alpha);  //stores the input from the user

if (alpha>='a' && alpha<='z')  //condition

{

printf("%c is a lower case character",alpha);//output

}

else 

{

printf("%c is a upper case chracter",alpha); //output

}

}

Output :