Write a program that repeatedly asks from users some numbers until string ‘done’ is typed. Program should accept only unique numbers that is once a number is entered, it cannot be re-entered. The program should print the sum of all numbers entered.

Write a program that repeatedly asks from users some numbers until string ‘done’ is typed. Program should accept only unique numbers that is once a number is entered, it cannot be re-entered. The program should print the sum of all numbers entered. Read More ยป