Question

Write a program that contains the following

1. Write a function copies with two int parameters, named n and x. It should dynamically allocate a new array of size n.  The function should then copy the value in x to every position in the array. The function should return a pointer to the new array.
   
2. In the main function, call the copies function from part 1. with size 5 and value -1.  Output the resulting array to the screen, and deallocate the array.
   
3. In your main function, add code to declare and initialize two integer variables y and z to 10 and 3.  Then call the function increment which has the prototype below.  The call should result in incrementing the value in y by z (so y will become 13).

void increment (int *a, int b); //do NOT define this function
// this function adds b to the value pointed to by the first argument

Answer 1

Answer1:

#include <iostream>
using namespace std;
int * copies(int n,int x){
        int *p=new int[n];
        for(int i=0;i<n;i++)
                *(p+i)=x;
        return p;
}
int main(){
        int *arr=copies(5,-1);
        for(int i=0;i<5;i++)
                cout<<arr[i]<<" ";
        delete arr;
}

Answer 2:

#include <iostream>
using namespace std;
void increment (int *a, int b){
        (*a)=(*a)+b;
}
int main(){
        int y=10,z=3;
        cout<<"y = "<<y<<endl;
        increment(&y,z);
        cout<<"y = "<<y<<endl;
        
}

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