C programming language

a. Check if a number is positive, negative or zero, use if-else. You can use a hard coded number first. Format the output like this: i. Number X is positive ii. E.g. with number 7: Number 7 is positive iii. E.g. with number-3: Number -3 is negative iv. E.g. with zero: Number is zero b. Do the same using switch-case. C. Check if a number is divisible by both 3 and 5 (use the % operator). d. Do both 4a, and 4c. but ask the number from user (check what scanf() function does). e. Do both 4a. and 4c. but use a random generated number, Google how to generate random (well, "random") numbers in C