Question

Write the definition of a function power_to, which receives two parameters. The first is a float and the second is an integer. The function returns a float. If the second parameter is negative, the function returns zero. Otherwise it returns the value of the first parameter raised to the power of the second.

Answer 1

1. public static double power_2(double num1, int num2){
2. if(num2<0){
3. return 0;
4. }
5. else{
6. double returnedVal = Math.pow(num1,num2);
7. return returnedVal;
8. }
9. }

Step-by-step explanation:

• This is implemented in Java programming language
• Line 1 Is the method declaration which indicates that it will return a floating point number (type double) and accepts two parameters, the first a double and the second an int as required by the question
• Line 2 Uses and if statement to check if the second parameter is negative (less than 0) and returns 0.0 if this is true
• Lines 5-7 is the else condition that uses java's Math.pow method to raise the num1 to the power num2 and returns the value