This is C++

1. The West Coast sales division of a company generates 58 percent of total sales. Based on that percentage, write a program that will predict how much the West Coast division will generate based on the total sales entered by a user.

2. Write a program that computes the total bill including tax and tip on a restaurant bill. Prompt the user to enter the meal charge. Compute the tax of 9.75% and a tip of 20 % of the total after tax has been added. Store each result in a separate variable. Output the sales tax, tip, and the total. Format the output as shown below.

3. Find the compile errors in the following program and fix them. Hint: Dont forget the return 0; statement. 2. Properly format the code to be clean and organized according to the instructions above. 3. Run the program with 5 and 0 as input and observe the output. Then add a condition to the program that prevents the runtime error above and prints an error message instead 4. The quotient is always an integer value. Change the code so that the quotient variable will always store the proper floating point value of the division.

4. Write a program that asks the user to enter the month (1-12) and the year(0-2019).Validate the input and print an error and stop the program if an invalid month or year was entered.The program should then display the number of days in that month. Use the following criteria to identify leap years:1.Determine whether the year is divisible by 100. If it is, then it is a leap year if and only if it is divisible by 400. For example, 2000 is a leap year but 2100 is not.2.If the year is not divisible by 100, then it is a leap year if and only if it is divisible by 4. For example, 2008 is a leap year but 2009 is not.