Question

C++ Program

1. Declare an integer static array a[ ] with 100 elements.

2. Declare an integer pointer p.

3. Let p pointing to the array a[ ].

4. Use p (you have to use p) to put 0 into the first element of this array, 2 into the second element, 4 into the 3rd element, 6 into the 4th element, ... 198 into the 100th element of this array.

5. Use a (you have to use a) to display the first 10 values in this array, one number on a line.

6. Ask the user to enter a positive integer as the size of an array.

7. Use p to declare an integer array of that size using the "new".

8. Copy the data from array a to array p. If array a's size is bigger than p's, fill the array p then stop. If the array a's size is smaller, fill the first 100 elements of array p with the values in a.

Answer 1

Hi, Please find the below code in c++;

#include <iostream>

using namespace std;

int main()
{
// create an integer static array a[ ] with 100 elements.
static int a [100];
//Declare an integer pointer p.
// Let p pointing to the array a[ ].
int *p = a;
// create an integer to store value to inserted in array a[]
int value = 0;
// create an integer to the new size entered by the user to create a new array
int newSize = 0;
// using p store the even numbers in array a[]
for(int j =0 ;j<100 ;j++){
p[j] = value;
// increment value by 2 to get the next even integer
value += 2;
}
// display first 10 integer in array a[]
for(int j =0 ;j<10 ;j++){
// use endl to change the line
cout<< p[j] << endl;
}
  
// display a message to take the positive integer to create a new array
cout<<"Enter a positive integer ";
  
cin>> newSize;
//Use p to declare an integer array of that size using the "new".
p = new int [newSize];
  
//Copy the data from array a to array p.
//If array a's size is bigger than p's, fill the array p then stop.
//If the array a's size is smaller, fill the first 100 elements of array p with the values in a.
if(newSize > 100){
for(int j =0 ;j<100;j++){
p[j] = a[j];
}
}
else{
for(int j =0 ;j<newSize;j++){
p[j] = a[j];
}
}
  

return 0;
}

OUTPUT: The first 10 elements in array a[] with a new integer size to create a new array

Thanks

Hope it helps!!