Write a program in python with a function hello(firstname, lastname), which, for example, if called with hello('James', 'Don'), would print two lines: Hello James Don Hello Don, James Use the function in a program where you ask the user for first and last name and then call the function.

Write a function that takes the current date and corrects the number of days, if it's wrong. The function must return true if the date passed to it is a valid date and false, if not. The main function uses the returned value to either print "Date validated", if a valid date was entered or "Invalid date entered. Changed to ", followed by the modified date.

write a program in C++, that should demonstrate a value returning function. Ask the user for their name and the type of ice cream they want. 1 for a bowl, 2 for a cone, and 3 for a take home ½ gallon container. Also ask how many toppings they want for their ice cream.  Then call getIceCreamTotal() and pass it the type of ice cream and how many toppings they want. Show the total it returns to the user with their name. getIceCreamTotal() should find the total for the ice cream and return it. Bowls are 2 dollars, cones are 1.5 dollars, and 5 dollars to take it home in a big container. The toppings are .75 each. Find the price plus the cost of the toppings and return that total.

Write a function that has a single input argument grade. If the user's input is a numeric number, the grade letter should be displayed to the command window depending on the value of grade, as shown in the table below. Otherwise, MATLAB should stop the execution and send an error message: "invalid input" to the command window. Grade Grade Letter Grade 2 90 A 90 > Grade 2 80 80 > Grade > 70 70> Grade 2 60 60> Grade Grade >100 or Unknown Grade using namespace std; int main) ( int score; char grade; coutss"Enter score: "; cin>>score; if(score100X cout<