Use mips (Mars application) to solve these question:

1. Read a number until you pressed zero and output how many Positive and Negative Numbers.

2. Read 5 numbers to output the sum of all even numbers.

3. Reads one number consisting of four digits from the user, then separates the number into its individual digits and prints the digits separated from one another by three spaces each.

For example, if the user types in the number 4235, the program should print “4 2 3 5.” Assumethat the user enters the correct number of digits.