4) Write a function power(double x, int y) to calculate powers of floating-point numbers. Arguments: The base of type double and the exponent of type int. Returns: The power x' of type double. For example, calling power(2.5, 3) returns the value 2.5 = 2.5 * 2.5 * 2.5 = 15.625. Call the function from the main function using some values. %3D

4) Write a function power(double x, int y) to calculate powers of floating-point numbers. Arguments: The base of type double and the exponent of type int. Returns: The power x' of type double. For example, calling power(2.5, 3) returns the value 2.5 = 2.5 * 2.5 * 2.5 = 15.625. Call the function from the main function using some values. %3D

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter6: User-defined Functions

Section: Chapter Questions

Problem 1TF: Mark the following statements as true or false: a. To use a predefined function in a program, you...

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Mark the following statements as true or false: a. To use a predefined function in a program, you need to know only the name of the function and how to use it. (1) b. A value-returning function returns only one value. (2, 3) c. Parameters allow you to use different values each time the function is called. (2, 7, 9) d. When a return statement executes in a user-defined function, the function immediately exits. (3, 4) e. A value-returning function returns only integer values. (4) f. A variable name cannot be passed to a value parameter. (3, 6) g. If a C++ function does not use parameters, parentheses around the empty parameter list are still required. (2, 3, 6) h. In C + + , the names of the corresponding formal and actual parameters must be the same. (3, 4, 6) i. A function that changes the value of a reference parameter also changes the value of the actual parameter. (7) j. Whenever the value of a reference parameter changes, the value of the actual parameter changes. (7) k. In C++, function definitions can be nested; that is, the definition of one function can be enclosed in the body of another function. (9) l. Using global variables in a program is a better programming style than using local variables, because extra variables can be avoided. (10) m. In a program, global constants are as dangerous as global variables. (10) n. The memory for a static variable remains allocated between function calls. (11)
5. Write a function that returns the factorial of the number sent to it as a parameter. The parameter and the number returned will be of type double. 6. Write to it a function named fnk, which returns a variable of type double (using the Math.Sin function to use a radian value as the parameter of this function). x '+ x * sin (x) + 5
Define a function hypotenuse that calculates the hypotenuse of a right triangle when the other two sides are given. The function should take two double arguments and return the hypotenuse as a double. You can use the sqrt function from the cmath library. Use this function in a program to determine the hypotenuse for each of the following triangles: Triangle Side 1 Side 2 1 3.0 4.0 2 5.0 12.0 3 8.0 15.0
Write and test the “digit” function:Function Prototype: int digit(int n,int k)This function returns the kth digit of the positive integer n. For example, if n is the integer 29,415, then the call digit(n,0) would return the digit 2, and the call digit(n,2) would return the digit 4.
1- Write a python function that takes a number as a parameter and returns true if the number entered by the user is a integer and returns false otherwise.2- Write a python function that takes a number as a parameter and returns true if the number entered by the user is a float and returns false otherwise. 3- Write a function that takes in one integer as a parameter. It makes sure that the number is indeed an integer and prints the sum of all its digits. Sample input: 145Sample output: 1+4+5=10
Q4: the volume of a cylinder is given by the formula: V=r r2L Where r is the cylinder's radius and L is its length. Using the above formula; write a program that uses a function which accepts a cylinder's radius and length as parameters and returns its volume.
A triangular number is defined as m(m + 1)/2 for m = 1, 2, c , and so on. Therefore, the first few numbers are 1, 5, 12, 22, . . . . Write a function with the following header that returns a triangular number: int getTriangularNumber(int n) Write a test program that uses this function to display the first 75 triangular numbers with 5 numbers on each line.
Write a function called area circumference generator that takes a radius of a circle as a function parameter and calculates its circumference and area. Then returns these two results as a tuple and prints the results using tuple unpacking in the function call accorrding to the given format. [Must use tuple packing & unpacking] Example1: Function Call: area_circumference_generator(1) Output: (3.141592653589793, 6.283185307179586) Area of the circle is 3.141592653589793 and circumference is 6.283185307179586 ======== :===== Example2: Function Call: area_circumference_generator(1.5) Output: (7.0685834705770345, 9.42477796076938) Area of the circle is 7.0685834705770345 and circumference is 9.42477796076938
The following formula can be used to determine the distance an object falls due to gravity in a speciﬁc time period: d = 1⁄2 gt2The variables in the formula are as follows: d is the distance in meters, g is 9.8, and t is the time in seconds that the object has been falling. Write a function named fallingDistance that accepts an object’s falling time (in seconds) as an argument. The function should return the distance, in meters, that the object has fallen during that time interval. Write a program that demonstrates the function by calling it in a loop that passes the values 1 through 10 as arguments and displays the return value.
To make a function return more than one result we pass parameters: By value. As int. By void. By reference.
LAB: User-Defined Functions: Miles to track laps One lap around a standard high-school running track is exactly 0.25 miles. Define a function named MilesToLaps that takes a float as a parameter, representing the number of miles, and returns a float that represents the number of laps.Then, write a main program that takes a number of miles as an input, calls function MilesToLaps() to calculate the number of laps, and outputs the number of laps. Ex: If the input is: 1.5 the output is: 6.0 Ex: If the input is: 2.2 the output is: 8.8 Your program should define and call a function: Function MilesToLaps(float userMiles) returns float userLaps Note: Remove all comments outside any functions before running the program.
Write function headers for the following functions (and indicate whether the function returns a value):■ Computing a sales commission, given the sales amount and the commission rate.■ Printing the calendar for a month, given the month and year.■ Computing a square root.■ Testing whether a number is even, and returning true if it is.■ Printing a message a specified number of times.■ Computing the monthly payment, given the loan amount, number of years, and annual interest rate.■ Finding the corresponding uppercase letter, given a lowercase letter.