In C language

Prompt the user to enter a string of characters and hit enter.

Your would be writing a program to parse each character. If there are duplicates , you program will stop and print duplicate charcter entered.

You would not be using any arrays.

A skeleton program is given to you here.

unsigned int temp = 0;

char ch;

printf ( "enter a string ");

while ( ( ch = getchar ( ) ) != ' ' ) {

}

When you find a duplicate char, print duplicate found and exit the program

or print all characters are unique