Question

Code: please use in visual studio 2019 c++ (not java)

In total you will write 6 functions:

Functions :

A ) addInts, returns int; input is two ints; Add the values of the two parameters and return the sum

B) subInts , returns int; input is two ints; Subtract the values of the two parameters and return the difference

C) multInts, returns int; input is two ints; multiple the values of the two parameters and return the product

D) divInts, returns int; input is two ints; Divide the values of the two parameters and return the quotient

E) modInts, returns int; input is two ints; compute the residual of the values of the two parameters and return the residual

F) A function called computeOperation ( ) that , returns an int; input is three parameters: one 'control' int, and two ints;  

if the control int ( the first parameter) is :

Control

Control Parameter	compute return value :
1	Return sum of 2nd and 3td parameters
2	Return diff of 2nd and 3td parameters
3	Return product of 2nd and 3td parameters
4	Return quotient of 2nd and 3td parameters
5	Return modulus of 2nd and 3td parameters

expect to see both Function Declarations and of course the Function Definitions for all 6 functions

expect to see some obvious test code or data sets.  

expect to see a switch statement not a series of if statements if it is appropriate.

To Be Clear:

in the main function there should be a homework header and then a bunch of 'call's to the

computeOperation ( ) function.  

And

computeOperation should then have code to invoke one of the 5 low level compute functions. The value that is returned should be returned by computeOperator.

Answer 1

/*
The C++ program that contains 6 functions called as addInts,subInts , multInts, modInts,computeOperation ( ).
The program test some sample values of x and y variables. Then call the function, computeOperation with operation code value in a range of 1 to 6, x and y values as 3 arguments to the function. Then, print the results of return values of the function on the console output.
*/

//arithmatic.cpp
//include header files
#include<iostream>
using namespace std;
//Function prototypes
int addInts(int , int);
int subInts(int , int);
int multInts(int , int);
int divInts(int , int);
int modInts(int , int);
int computeOperation (int , int ,int);
//start of main function
int main()
{
   //Set sample values for x and y values
   int x=10;
   int y=5;
   //Set result to 0
   int result=0;
   //Set operationcode to 1 for addition
   int operationcode=1;
   result=computeOperation(operationcode,x,y);
   cout<<"computeOperation("<<operationcode<<","
       <<x<<","<<y<<") = " <<result<<endl;

   //Set operationcode to 1 for subtracation
   operationcode=2;
   result=computeOperation(operationcode,x,y);
   cout<<"computeOperation("<<operationcode<<","
       <<x<<","<<y<<") = " <<result<<endl;

   //Set operationcode to 1 for multiplication
   operationcode=3;
   result=computeOperation(operationcode,x,y);
   cout<<"computeOperation("<<operationcode<<","
       <<x<<","<<y<<") = " <<result<<endl;

   //Set operationcode to 1 for division
   operationcode=4;
   result=computeOperation(operationcode,x,y);
   cout<<"computeOperation("<<operationcode<<","
       <<x<<","<<y<<") = " <<result<<endl;

   //Set operationcode to 1 for modulus
   operationcode=5;
   result=computeOperation(operationcode,x,y);
   cout<<"computeOperation("<<operationcode<<","
       <<x<<","<<y<<") = " <<result<<endl;

   system("pause");
   return 0;
}
/*Function, addInts takes two arguments of integer
type and returns the sum of the values as return value*/
int addInts(int x , int y)
{
   return x+y;
}
/*Function, subInts takes two arguments of integer
type and returns the difference of the values as return value*/
int subInts(int x , int y)
{
   return x-y;
}
/*Function, multInts takes two arguments of integer
type and returns the product of the values as return value*/
int multInts(int x , int y)
{
   return x*y;
}
/*Function, divInts takes two arguments of integer
type and returns the quotient of the values as return value*/
int divInts(int x , int y)
{
   return x/y;
}
/*Function, modInts takes two arguments of integer
type and returns the remainder of the values as return value*/
int modInts(int x , int y)
{
   return x%y;
}
/*
The function , computeOperation takes three
input arguments of integer type opcode, x and y variables.
Then using switch case, select the appropriate
function call . Then store the return value in result.
Returns the result value.
*/
int computeOperation (int opcode,int x , int y)
{
   int result=0;
   switch(opcode)
   {
   case 1:
       result= addInts(x,y);
       break;
   case 2:
       result= subInts(x,y);
       break;
   case 3:
       result= multInts(x,y);
       break;
   case 4:
       result= divInts(x,y);
       break;
   case 5:
       result= modInts(x,y);
       break;
   }
   return result;
}

Sample Output: