Question

answer in c++

1. Using the table below, complete the C++ code to write the function prototype statement, and the void function header.

The void function should receive three double variables: the first two by value and the last one by reference. Name the formal parameters num1, num2 and answer. The function should divide the num1 variable by the num2 variable and then store the result in the answer variable. Name the function calcQuotient. Also write an appropriate function prototype for the calcQuotient function. In addition, write a statement that invokes the calcQuotient function, passing it the n1, n2 and quotient variables.

Function Prototype:
Function Call:	int main() { double n1 = 10; double n2 = 5; double quotient = 0; calcQuotient(n1, n2, quotient); cout << "Quotient: " << quotient << endl; return 0; }//end of main function
Function Header:	__________________________________________ { answer = num1 / num2; }

1. A program’s main function declares three double variables named sales, taxRate, and salesTax. The main function contains the following statement: calcSalesTax(sales, taxRate, salesTax);. The calcSalesTax function is responsible for calculating the sales tax based on the sales and tax rate passed to it. Its function header looks like this: void CalcSalesTax(double sold, double rate, double tax).

Correct the function prototype and the function header.

Function Prototype	CalcSalesTax(double sold, double rate, double tax);
CORRECTION:
Function Call	calcSalesTax(sales, taxRate, salesTax);
Function Header	CalcSalesTax(double sold, double rate, double tax)
CORRECTION:

2. Using the table below, complete the C++ code to create a void function that receives four int variables: the first two by value and the last two by reference. Name the formal parameters n1, n2, sum, and diff. The function should calculate the sum of the two variables passed by value and then store the result of the first variable passed by reference. It also should calculate the difference between the two variables passed by value and then store the result in the second variable passed by reference. When calculating the difference, subtract the contents of the N2 variable from the contents of the n1 variable. Name the function calcSumAndDiff. Also write an appropriate function prototype for the calcSumAndDiff function. In addition, write a statement that invokes the calcSumAndDiff function, passing it the num1, num2, numSum, and numDiff variables.

I recommend you test out the code to check that all is working properly.

Function Prototype
Main() with Function Call	int main() { int num1 = 10; int num2 = 5; int numSum = 0.0; int numDiff = 0.0; __________________________________________ cout << "Sum: " << numSum << endl; cout << "Difference: " << numDiff << endl; }
Function Definition	__________________________________________ { sum = n1 + n2; diff = n1 - n2; }

Answer 1

question:1

code:

#include <iostream>
using namespace std;
void calQuotient(double num1, double num2,double &answer); //functoin protype
int main()
{
double n1=10;
double n2=5;
double quotient=0;
calQuotient(n1,n2,quotient);
cout<<"Quotient: "<<quotient<<endl;
return 0;
}
void calQuotient(double num1, double num2,double &answer) //function defination
{
answer=num1/num2;
}

OUTPUT:

Quotient: 2

screenshot:

Question :2

code:

#include <iostream>
using namespace std;
void calSalesTax(double sold,double rate,double tax); //function prototype
int main()
{
double sales,taxRate,salesTax;
calSalesTax(sales,taxRate,salesTax);
return 0;
}
void calSalesTax(double sold,double rate,double tax) //function defination
{
  
}

screenshot:

Question 3:

code

#include <iostream>
using namespace std;
void calSumAndDiff(int n1,int n2,int &sum,int &diff); //function prorotype
int main()
{
int num1=10;
int num2=5;
int numSum=0.0;
int numDiff=0.0;
calSumAndDiff(num1,num2,numSum,numDiff);
cout<<"Sum:"<<numSum<<endl;
cout<<"Difference:"<<numDiff<<endl;
return 0;
}
void calSumAndDiff(int n1,int n2,int &sum,int &diff) //function defination
{
sum=n1+n2;
diff=n1-n2;
}

OUTPUT;

Sum:15
Difference:5

screenshot: