C program to check the given input character is Upper case, Lower case and digit.

//to check if entered character is uppercase or lowercase

//alphabet or is a digit

main()

{

char a;

printf("Enter the character\n");

a=getchar();

if(isalpha(a))

{

printf("It is a Alphabet\n");

if(isupper(a))

{

printf("It is in upper case\n");

}

else

{

printf("It is in lower case\n");

}

}

else if(isdigit(a))

{

printf("It is a digit\n");

}

system("pause");

}