Q2: Answer two of the following: 1- Write a C++ function that returns the sign of the number. The function should work with integer and float numbers. C++ (-1 ifx<0, sign(x) ={ 0 if x = 0, 1 if x>0. 2- Write a C++ program to ask the user to enter his her first and second name. After that, ask them to enter their third name and then save the first, second and third names in a new string.
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- c programming - solve with function please Code The function named "odd_ even" to find out whether the integer sent into it is odd or even and prints to the screen.(Electrical eng.) a. The voltage gain of an amplifier is given by this formula: voltagegain=[275 23 2 +0.5 f 2 ]n f is the frequency in Hz. n is the number of stages in the amplifier. Using this formula, write, compile, and run a C++ program to determine the value of the voltage gain for a four-stage amplifier operating at a frequency of 120 Hz. Your program should produce the following display: At a frequency of xxxxx hertz, the voltage gain is yyyyy Your program should replace xxxxx with the frequency and yyyyy with the voltage gain. b. Manually check the value your program produces. After verifying that your program is working correctly, modify it to determine the voltage gain of a 12-stage amplifier operating at a frequency of 9500 Hz.Numerical analysis) Given a number, n, and an approximation for its square root, a closer approximation of the actual square root can be found by using this formula: newapproximation=(n/previousapproximation)+previousapproximation2 Using this information, write a C++ program that prompts the user for a number and an initial guess at its square root. Using this input data, your program should calculate an approximation of the square root that’s accurate to 0.00001. (Hint: Stop the loop when the difference between the two approximations is less than 0.00001.)
- 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)(Hydraulics) a. Write, compile, and run a C++ program to calculate the horizontal force exerted on the T-connector pipe shown in Figure 2.16 when the mass flow rate is 1.5 kg/s, and the fluid’s velocity entering the T-connector is 3 m/s. The formula for determining this force is as follows: Fh=MfvFhisthehorizontalforce(N).Mfisthemassflowrate( kg/s).visthevelocity( m/s)ofthefluidenteringthepipe. Your program should produce the following display (replacing the xxxx with the actual force value your program calculates): The horizontal force, in Newtons, is xxxx b. Manually check the values computed by your program. After verifying that your program is working correctly, modify it to calculate the force exerted when the mass flow rate is 2.3 kg/s, and the velocity of the fluid entering the pipe is 4.25 m/s.Q1: Write a C++ program to read any integer number and determine if the number is not prime using function int prime(), the answer will be printed from the main function.
- DO IT WITH C++ PROGRAM 1. Write a parameter and return program that will require the user to enter a temperature in Celsius and convert it to degree Fahrenheit and degree Formula: Fahrenheit = (9/5) * Celsius + 32 Kelvin = Celsius + 273 2. Refer to No. 1, transform the program using function header and function 3. Write a global and local variable program that would require the user to input a value of the Radius of a circle and then show the output in the diameter, circumference of the circle and area of the circle.Hi I need help please I am resubmitting this question because I forgot to mention that It is in C++ language and I want to make a function which will find and replace parts of a string entered by the user and replace that substring with another string chosen by the user. I need help tutoring me on what variables and loops to use for this program pleaseAnswer the following. The correct one in function if the code.
- Write a C function to calculate the factorial of a number. Write the main() program to accept 10 numbers from the user and display the factorial for each number .Write a complete C program to calculate the perimeter and area of a triangle with 3 sides namely a, b, and c. The sides will be given as inputs by the user. The program will be executed at least once, and repeat as long as user wish to calculate again. There are a total of 5 functions: • Function 1: - This function will display the menu options that the user can choose (to calculate perimeter or area of a triangle). • Function 2: - This function will calculate the perimeter of a triangle - Accepts the sides of triangle as parameter - Formula: perimeter = a + b + c - Return the result back to the caller. • Function 3: - This function will calculate the area of a triangle - Accepts the sides of triangle as parameter - Formula: area = Vs (s — a)(s — b)(s — c), where s = (a + b + c)/2 - Return the result back to the caller. • Function 4: - This function will get the sides of triangle from user. - Ask user for option on what s/he would like to calculate. - Based on the option (Use switch…Q. Write a function days_in_month() that returns the number of days in a month. The function has the following prototype: int days_in_month(int month, int is_leap); Month should be an integer value between 1 and 12. The function should return (-1) if an invalid month is input. The variable ‘is_leap’ is 1 for leap years, 0 otherwise. Write program in c.
