C++ assignment help, please provide comments!! 1.Write a code snippet that asks

Question

C++ assignment help, please provide comments!!

1.Write a code snippet that asks the user to enter how many scores will be input and allocates an array with the requested capacity. Then ask the user again and allocate a new array using the same variable used for the previous array. What should you do to avoid leaking the memory of the previous array?

2 Write a function named combine that takes two int arrays and their lengths and returns a new array that contains all the elements in arr1 followed by the elements in arr2. Provide client code that calls the function and prints all the elements.

Explanation / Answer

1.

#include <iostream>

using namespace std;

int main()
{
int *arr;
int n;
cout << "Enter numbe rof elements: ";
cin >> n;
arr = new int[n];
  
delete [] arr;
cout << "Enter numbe rof elements: ";
cin >> n;
arr = new int[n];
  delete [] arr;
return 0;
}

before reallocating space to same variable previously allocated space need to be freed.

2.

#include <iostream>

using namespace std;

int* combine(int a[], int b[], int n, int m)
{
int *newArr = new int[n+m];
  
for(int i = 0; i < n; i++)
{
newArr[i] = a[i];
}
  
for(int i = 0; i < m; i++)
{
newArr[n+i] = b[i];
}
return newArr;
  
}

int main()
{
int a[] = {1,2,3,4};
int b[] = {5,6,7};
  
int *c = combine(a, b, 4, 3);
  
for(int i = 0; i < 7; i++)
{
cout << c[i] << " ";
}
cout << endl;
  
return 0;
}

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