Question

write the program that inputs a string representing a binary number(0s and 1s). First, your program should veerify that it is indeed a binary number, that is, the number contains only 0s and 1s . if that is not the case, your program should print a message that number is not a valid binary number.then your program should count how many 1s are in that string and output the count. if the string does not represent a valid binary number, the program should keep prompting the user for a new string until a string representing a valid binary number is input by the user.