Question

Objective:

The objective of this assignment is to allow students to understand the basic principles of arrays

Program Requirements:

The assignment will require the students use arrays to perform mathematical calculations.

Program Setup: Functions to include in the program

• The program will have three functions

  • Function 1: Responsible for setting values in the arrays

  • Function 2: Responsible for printing values in arrays

  • Function 3: Responsible for doing calculations to arrays

Function 1 Details: Setting array values

• Parameters: 3

  • Array of integers

  • Int value representing the size of array

  • String value representing the “array type”

• Return Type: None

• This function will be responsible for filling in the values of the array

• The function will in the array using the following steps

• Step 1: Checking the value of the array type (3rd parameter)

  • The array type will determine how we are going to fill in the arrays

  • The array type is going to be checked for the following

    • Value 1

    • Value 2

• Step 1 Part A: Filling in the array for “value 1”

  • The program will ask the user to enter an integer value

  • The integer value will be stored in the array

  • The user will have to keep entering values until the entire array is filled (using the size of the array)

• Step 1 Part B: Filling in the array for “value 2”

  • The program will randomly select a number between 1 and 200

  • The random number will be stored in the array

  • The program will store a random number until the entire array is filled (using the size of the array)

Function 2 Details: Printing arrays

• Parameters: 2

  • Array of integers

  • Int value representing the size of array

• Return Type: None

• This function will be responsible for printing out the contents of the array

• Contents will be print in the following format

  • Index # : value of the array (at that index)

Function 3 Details: Performing mathematical calculations on the arrays

• Parameters: 5

  • Array of integers for value 1

  • Array of integers for value 2

  • Array of integers for the sum

  • Int value representing the size of array

  • String value representing the math operation

• Return Type: None

• This function will be responsible for performing the mathematical calculations on the two arrays

• Step 1: Checking the value of the math operation (5th parameter)

  • The math operation will determine what mathematical calculation will be done on the two arrays

  • The math operation will be one of the following choices

    • Add

    • Sub

    • Mul

    • Div

• Step 2: Perform the selected mathematical calculation

  • The function is then going to perform the mathematical on the two arrays

  • For Example, lets say “Add” was selected

    • The function will then go through every element in both arrays and add them together

    • The results will be stored in the sum array

    • Array1[i] + array2[i] = sum[i]

  • The program will then print the results to the screen in the following format

    • Array1[i] <mathematical operator> array2[i] = sumArray[i]

Flow of the program

• Now that the functions have been defined, we are now going to describe how the program is going to flow from the main

• Program Setup

  • There should be three arrays declared at the beginning of the main

    • All three arrays should have the same size

• Step 1: Filling in the values for array 1

  • Use Function 1 to set the values for array 1

  • Array 1 will be passed as the first parameter

  • Array size will be passed as the second parameter

  • “Value 1” will be passed as the third parameter

• Step 2: Printing the contents of array 1

  • Use Function 2 to print array contents

  • Array 1 will be passed as the first parameter

  • Array size will be passed as the second parameter

• Step 3: Filling in the values for array 2

  • Use Function 1 to set the values for array 2

  • Array 2 will be passed as the first parameter

  • Array size will be passed as the second parameter

  • “Value 2” will be passed as the third parameter

• Step 4: Printing the contents of array 2

  • Use Function 2 to print array contents

  • Array 2 will be passed as the first parameter

  • Array size will be passed as the second parameter

• Step 5: Performing mathematical calculations

  • Use Function 3 to perform the following mathematical calculations

  • Call function 3 four times

  • The first four parameters are going to stay the same for each call

    • Array 1

    • Array 2

    • Sum Array

    • Array Size

  • The fifth parameter is going to change base between each call

    • Add: first call

    • Sub: second call

    • Mul: third call

    • Div: fourth call

Done in C++ and visual studios 2017

Answer 1

Program:

#include <bits/stdc++.h>   
using namespace std; 

void setValues(int *array, int n, int typ)
{
        if(typ==1)
        {
                cout<<"Enter "<<n<<" array elements\n";
                for(int i=0; i<n; i++)
                {
                        int a;
                        cin>>a;
                        array[i]=a;
                }
        }
        else
        {
                cout<<"Randomly choosing array elements......\n";
                for(int i=0; i<n; i++)
                {
                        array[i]= rand() % 200;
                }
        }
}

void printArray(const int *array, int n)
{
        for(int i=0; i<n; i++)
        {
                cout<<i+1<<": "<<array[i]<<endl;
        }
}

void arrayOper(const int *arr, const int *brr, int *res, int n, char oper)
{
        if(oper == '+')
        {
                for(int i=0; i<n; i++)
                {
                        res[i] = arr[i] + brr[i];
                        cout<<arr[i]<<" + "<<brr[i]<<" = "<<res[i]<<endl;
                }
        }
        if(oper == '-')
        {
                for(int i=0; i<n; i++)
                {
                        res[i] = arr[i] - brr[i];
                        cout<<arr[i]<<" - "<<brr[i]<<" = "<<res[i]<<endl;
                }
        }
        if(oper == '*')
        {
                for(int i=0; i<n; i++)
                {
                        res[i] = arr[i] * brr[i];
                        cout<<arr[i]<<" * "<<brr[i]<<" = "<<res[i]<<endl;
                }
        }
        if (oper == '/')
        {
                for(int i=0; i<n; i++)
                {
                        res[i] = arr[i] / brr[i];
                        cout<<arr[i]<<" / "<<brr[i]<<" = "<<res[i]<<endl;
                }
        }
}
int main()
{
    int n, typ1, typ2;
    cout<<"enter the length of array: ";
    cin>>n;
    int arr[n], brr[n], res_arr[n];
    
    cout<<"How you want to fill the array 1?\n1. Manually\n2. Randomly\n";
    cin>>typ1;
        setValues(arr, n, typ1);
        printArray(arr, n);
        
        cout<<"How you want to fill the array 2?\n1. Manually\n2. Randomly\n";
    cin>>typ2;
        setValues(brr, n, typ2);
        printArray(brr, n);
        
        cout<<"Operations: \n";
        arrayOper(arr, brr, res_arr, n, '+');
        cout<<endl;
        arrayOper(arr, brr, res_arr, n, '-');
        cout<<endl;
        arrayOper(arr, brr, res_arr, n, '*');
        cout<<endl;
        arrayOper(arr, brr, res_arr, n, '/');
        
    return 0;
}

Output :

Hope this will help!

Good Luck :)