Question

#include <iostream>

#include <fstream>

using namespace std;

//constants

const int CAP = 100;

//function prototypes

bool openFile(ifstream &);

void readData(ifstream &, int [], int &);

void printData(const int [], int);

void sum(const int[], int);

void removeItem(int[], int &, int);

int main()

{

ifstream inFile;

int list[CAP], size = 0;

if (!openFile(inFile))

{

cout << "Program terminating!! File not found!" << endl;

return -1;

}

//read the data from the file

readData(inFile, list, size);

inFile.close();

cout << "Data in file:" << endl;

printData(list, size);

//remove a few items

removeItem(list, size, 9);

printData(list, size);

removeItem(list, size, 200);

printData(list, size);

removeItem(list, size, 15);

printData(list, size);

//call the sum function

sum(list, size);

//end program

cin.ignore(100, '\n');

cout << "Press any key to continue...";

getchar();

return 0;

}

//function to open file

bool openFile(ifstream &inFile)

{

inFile.open("numbers.txt");

if (!inFile)

{

return false;

}

return true;

}

//reads the data from the file

void readData(ifstream &inFile, int list[], int &size)

{

while (!inFile.eof())

{

inFile >> list[size++];

}

}

//print the contents of the array

void printData(const int list[], int size)

{

for (int i = 0; i < size; i++)

{

cout << list[i] << endl;

}

cout << endl;

}

//remove an item (delNum) and return the number removed to main. If number does not exist, return -1.

void removeItem(int list[], int &size, int delNum)

{

//insert code here

for (int i = 0; i < size; i++)

{

if (list[i] < delNum)

{

delNum = list[i];

  

  

}

}

  

}

//count the even numbers in the list and output in this function

void sum(const int list[], int size)

{

int sum = 0, n = 0;

  

for (int i = 0; i < size; i++)

{

sum = sum + list[i];

  

if(list[i] %2 == 0)

  

n++;

cout <<"even numbers: "<< n <<"sum: " << sum << endl;

  

  

  

}

}

help me fix the remove and sum functions please

Answer 1

C++ code

============================================================================================

#include <iostream>

#include <fstream>

using namespace std;

//constants

const int CAP = 100;

//function prototypes

bool openFile(ifstream &);

void readData(ifstream &, int [], int &);

void printData(const int [], int);

void sum(const int[], int);

void removeItem(int[], int &, int);

int main()

{

ifstream inFile;

int list[CAP], size = 0;

if (!openFile(inFile))

{

cout << "Program terminating!! File not found!" << endl;

return -1;

}

//read the data from the file

readData(inFile, list, size);

inFile.close();

cout << "Data in file:" << endl;

printData(list, size);

//remove a few items

removeItem(list, size, 9);

printData(list, size);

removeItem(list, size, 200);

printData(list, size);

removeItem(list, size, 15);

printData(list, size);

//call the sum function

sum(list, size);

//end program

cin.ignore(100, '\n');

cout << "Press any key to continue...";

getchar();

return 0;

}

//function to open file

bool openFile(ifstream &inFile)

{

inFile.open("numbers.txt");

if (!inFile)

{

return false;

}

return true;

}

//reads the data from the file

void readData(ifstream &inFile, int list[], int &size)

{

while (!inFile.eof())

{

inFile >> list[size++];

}

}

//print the contents of the array

void printData(const int list[], int size)

{

for (int i = 0; i < size; i++)

{

cout << list[i] << endl;

}

cout << endl;

}

//remove an item (delNum) and return the number removed to main. If number does not exist, return -1.

void removeItem(int list[], int &size, int delNum)

{
   //insert code here
int loc=-1;
int i;
//find if items is present in list or not
for (i = 0; i < size; i++)
{
   if(list[i]==delNum)
   {
       loc=i;
       break;
   }
}

if(loc!=-1)
{
   for(i=loc;i<size-1;i++)
   {
       list[i]=list[i+1];
   }
   size=size-1;
}

}

//count the even numbers in the list and output in this function

void sum(const int list[], int size)

{

int sum = 0,n=0;
for (int i = 0; i < size; i++)
{
if(list[i] %2 == 0)
{
   sum = sum + list[i];
   n++;
}

}
cout <<"even numbers: "<< n <<" sum: " << sum << endl;

}

============================================================================================

Output

Answer 2

It seems that you have provided a C++ code that reads data from a file, manipulates an array, and performs some calculations. However, there are a couple of issues in the code:

1. In the removeItem function, the logic is not correct for removing an item from the array. The current code is comparing elements of the array with delNum, and if the element is less than delNum, it assigns delNum to the element, which doesn't make sense. To remove an element from the array, you should shift all the elements after the one to be removed to the left.

2. In the sum function, the variable n is used to count the even numbers in the list. However, it is declared inside the loop, so it will always start from 0 at each iteration. To count the even numbers, you should declare n outside the loop and only increment it when an even number is encountered.

Here's an updated version of the code with the issues fixed:

cppCopy code#include <iostream>#include <fstream>using namespace std;// Constantsconst int CAP = 100;// Function prototypesbool openFile(ifstream &);void readData(ifstream &, int[], int &);void printData(const int[], int);void removeItem(int[], int &, int);void sum(const int[], int);int main(){
    ifstream inFile;    int list[CAP], size = 0;    if (!openFile(inFile))
    {
        cout << "Program terminating!! File not found!" << endl;        return -1;
    }    // Read the data from the file
    readData(inFile, list, size);
    inFile.close();

    cout << "Data in file:" << endl;    printData(list, size);    // Remove a few items
    removeItem(list, size, 9);    printData(list, size);    removeItem(list, size, 200);    printData(list, size);    removeItem(list, size, 15);    printData(list, size);    // Call the sum function
    sum(list, size);    // End program
    cin.ignore(100, '\n');
    cout << "Press any key to continue...";    getchar();    return 0;
}// Function to open the filebool openFile(ifstream &inFile){
    inFile.open("numbers.txt");    if (!inFile)
    {        return false;
    }    return true;
}// Reads the data from the filevoid readData(ifstream &inFile, int list[], int &size){    while (!inFile.eof())
    {
        inFile >> list[size++];
    }
}// Print the contents of the arrayvoid printData(const int list[], int size){    for (int i = 0; i < size; i++)
    {
        cout << list[i] << endl;
    }
    cout << endl;
}// Remove an item (delNum) from the arrayvoid removeItem(int list[], int &size, int delNum){    int i;    for (i = 0; i < size; i++)
    {        if (list[i] == delNum)
        {            break;
        }
    }    if (i < size)
    {        // Shift elements after the element to be removed to the left
        for (int j = i; j < size - 1; j++)
        {
            list[j] = list[j + 1];
        }
        size--;
    }
}// Count the even numbers in the list and output the sumvoid sum(const int list[], int size){    int sum = 0, n = 0;    for (int i = 0; i < size; i++)
    {
        sum = sum + list[i];        if (list[i] % 2 == 0)
        {
            n++;
        }
    }
    cout << "Even numbers: " << n << " Sum: " << sum << endl;
}

Please note that the provided code assumes that the file "numbers.txt" exists and contains the data to be read into the array. Additionally, the code performs basic operations like reading data, printing data, removing items from the array, and calculating the sum of elements in the array. You may need to provide the file "numbers.txt" with the desired input data before running the program.