Write, compile, and execute a C program that calculates and returns the fourth root of the number 81.0, which is 3. ( Hint : The fourth root of a number can be obtained by raising the number to the 1/4, or .25 power).
【简答题】Use the conversdation strategy in Activity 5 and make an conversation according to the following: Your friend invites you to a movie, but you can't go. Speak with your friend and make an excese.