Question

MAC 102 Quiz 2 Write a C++ programs to: 1. (2 points) receive two numbers from the keyboard, 2. (3 points) save these two numbers in an array of two elements, 3. (3 points) use a function to swap them, 4. (2 points) display the contents of the array (swapped) on the screen with proper message. You need to email your program to [email protected] no later than 3 pm. Please include your name, quiz #2, MAC102 in the email's subject line.

Answer 1

Program code to copy

#include <iostream>
using namespace std;

/*
Below function is taking an array and swapping it's element.
Note:- No need to pass array as reference.
Arrays are always passed by reference.
  
Below swap function will successfully swap two numbers and
also changes will be there in main function.
*/
void swap(int arr[]){
  
//Temporary variable to hold array element
int temp;
//Performing swapping of array elements
temp = arr[0];
arr[0] = arr[1];
arr[1] = temp;
}

int main(){
  
int num1, num2;
//Array of two elements
int arr[2];
  
//Taking two numbers from keyboard
cout<<"Enter two numbers: ";
cin>>num1>>num2;
  
//Saving numbers in array of two elements
arr[0] = num1;
arr[1] = num2;
  
cout<<"\nArray elements before swapping: "<<arr[0]<<" "<<arr[1];
swap(arr);
cout<<"\nArray elements after swapping: "<<arr[0]<<" "<<arr[1];
  
return 0;
}

Program screenshot

1 #include <iostream> 2 using namespace std; 3 4- /* 5 Below function is taking an array and swapping it's element. 6 Note:- No need to pass array as reference. Arrays are always passed by reference. co 9 Below swap function will successfully swap two numbers and 10 also changes will be there in main function. 11 */ 12 void swap(int arr[]){ 13 //Temperory variabl to hold array element int temp; //Performing swapping of array elements temp = arr[0]; arr[@] = arr[1]; arr[1] = temp; 20 } 22. int main(){ int num1, num2; //Array of two elements int arr[2]; \/Temporary variable to hold array elementi cout<<"Enter two numbers: "; cin>>num1 >>num2;

20 } 21 22. int main() { int num1, num2; //Array of two elements int arr[2]; V/Temporary variable to hold array element cout<<"Enter two numbers: "; cin>>num1 >>num2; //Saving numbers in array of two elements arr[0] = num1; arr[1] = num2; cout<<"\nArray elements before swapping: "<<arr[@]<<" "<<arr[1]; swap(arr); cout<<"\nArray elements after swapping: "<<arr[@]<<" "<<arr[1]; return 0;

Program Output

input Enter two numbers: 20 40 Array elements before swapping: 20 40 Array elements after swapping: 40 20 .. Program finished with exit code o Press ENTER to exit console.

//Saving numbers in array of two elements arr[0] = num; arr[1] = num2; cout<<"\nArray elements before swapping: "<<arr[@]<<" "<<arr[1]; swap(arr); cout<<"\nArray elements after swapping: "<<arr[@]<<" "<<arr[1]; input Enter two numbers: 5 6 Array elements before swapping: 56 Array elements after swapping: 6 5 ... Program finished with exit code o Press ENTER to exit console. I