Question

Write C++ Program

The aim of this is to develop various functions on an array. First, create an array (A) with 10 integers, which will be randomly selected from the range of 0 to 100. Print the items of the array on screen as one line. Write a function to copy A to B. The function signature should be "void Copy(int A[], int B[], int size)". This function copies content of A into B in the same order. - Write a function to copy items of A to B in reverse order. The function signature is "void Reverse(int A[], int B[], int size)" Demonstrate these functions, such as Initialization of A... A: 32, 41, 12, 71, 34, 45, 11, 94, 55, 35, After Copy (A,B) A: 32, 41, 12, 71, 34, 45, 11, 94, 55, 35, B: 32, 41, 12, 71, 34, 45, 11, 94, 55, 35, After Reverse (A,B) A: 32. 41, 12, 71, 34, 45, 11, 94, 55, 35, B: 35, 55, 94, 11, 45, 34, 71. 12, 41, 32, Bye...

Answer 1

All the explanation is in the code comments. Hope this helps!

Code:

#include <iostream>
#include <stdlib.h> /* srand, rand */
#include <ctime>

using namespace std;

// note - array is passed by reference
// and hence any changes made in the function are reflected

// function to copy array
void Copy(int A[], int B[], int size)
{
// loop for all elements
for(int i=0; i<size; i++)
{
B[i] = A[i];
}
}

// function to copy array in reverse
void Reverse(int A[], int B[], int size)
{
// loop for all elements
for(int i=0; i<size; i++)
{
// copy last ith element (size-i-1) as ith element of B
B[i] = A[size-i-1];
}
}

int main()
{
// size of array
int n = 10;
// 2 arrays
int A[n], B[n];
  
// randomly initialise A with 10 integers
// seed the random number generator
srand(time(0));
// loop for all elements
for(int i=0; i<n; i++)
// choose number from 0 to 100
A[i] = rand() % 101;
  
// print initialisation
cout << "Initialization of A...\n";
cout << "\tA :";
for(int i=0; i<n; i++)
cout << " " << A[i] << ",";
cout << endl;
  
// copy and print results
Copy(A, B, n);
cout << "After Copy(A, B)\n";
cout << "\tA :";
for(int i=0; i<n; i++)
cout << " " << A[i] << ",";
cout << endl;
cout << "\tB :";
for(int i=0; i<n; i++)
cout << " " << B[i] << ",";
cout << endl;
  
// reverse copy and print results
Reverse(A, B, n);
cout << "After Reverse(A, B)\n";
cout << "\tA :";
for(int i=0; i<n; i++)
cout << " " << A[i] << ",";
cout << endl;
cout << "\tB :";
for(int i=0; i<n; i++)
cout << " " << B[i] << ",";
cout << endl;
  
// exit message
cout << "Bye...\n";

return 0;
}

Sample result:

Initialization of A... A: 31, 87, 20, 63, 31, 93, 78, 58, 96, 50, After Copy (A, B) A: 31, 87, 20, 63, 31, 93, 78, 58, 96, 50, B: 31, 87, 20, 63, 31, 93, 78, 58, 96, 50, After Reverse (A, B) A: 31, 87, 20, 63, 31, 93, 78, 58, 96, 50, B : 50, 96, 58, 78, 93, 31, 63, 20, 87, 31, Bye...

Code screenshots:

1 #include <iostream> 2. #include <stdlib.h> /* srand, rand */ 3 #include <ctime> 4 5 using namespace std; 6 7 // note - array is passed by reference 8 // and hence any changes made in the function are reflected 9 10 // function to copy array 11 void copy(int A[], int B[], int size) 12 - { 13 // Loop for all elements 14 for(int i=0; i<size; i++) 15 - { 16 B[i] = A[i]; 17 } 18 } 19 20 // function to copy array in reverse 21 void Reverse(int A[], int B[], int size) 23 // Loop for all elements 24 for(int i=0; i< size; i++) 25 - { 26 // copy Last ith element (size-i-1) as ith element of B 27 B[i] = A[size-i-1]; 22 - { 28 { 29 } 30 31 int main() 32 33 // size of array 34 int n = 10; 35 // 2 arrays 36 int A[n], B[n]; 37 38 // randomly initialise A with 10 integers 39 // seed the random number generator 40 srand(time());

// Loop for all elements for(int i=0; i<n; i++) // choose number from 0 to 100 A[i] = rand() % 101; 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81} // print initialisation cout << "Initialization of A... \n"; cout << "\tA :"; for(int i=0; i<n; i++) cout << " " << A[i] << ". cout << endl; // copy and print results Copy (A, B, n); cout << "After Copy(A, B)\n"; cout << "\tA :"; for(int i=0; i<n; i++) cout << " " << A[i] << ","; cout << endl; cout << "\tB:"; for(int i=0; i<n; i++) cout << " " << B[i] << ","; cout << endl; // reverse copy and print results Reverse(A, B, n); cout << "After Reverse(A, B)\n"; cout << "\tA :"; for(int i=0; i<n; i++) cout << " " << A[i] << ","; cout << endl; cout << "\tB:"; for(int i=0; i<n; i++) cout << " " << B[i] << ". cout << endl; // exit message cout << "Bye...\n"; return;