Question

17.9 Worksheet 7 (C++)

Follow the instructions commented into the given template.

int main()
{
int array1[20] = {3, 18, 1, 25, 4, 7, 30, 9, 80, 16, 17};
int numElements = 11;

cout << "Part 1" << endl;

// Part 1
// Enter the statement to print the numbers in index 4 and index 9
// put a space in between the two numbers
  
cout << endl;

// Enter the statement to print the numbers 3 and 80 from the array above
// put a space in between the two numbers

cout << endl;

// Enter the statement to change the number 1 in the array to be 12
// then write the statement to print out that number in the array

cout << "\nPart 2" << endl;

// Part 2
// Write a function called printAll. It takes in an array
// and an integer that has the number of values in the array.
// The function should print all the numbers in the array with
// a space between each one.
// Call the function on the line below.
  

cout << "\nPart 3" << endl;

// Part 3
// Write a function called printEven. It takes in an array and
// an integer that has the number of values in the array. It prints
// all the even numbers in the array with a space between each one.
// This function returns the count of evens.
  int evens,
// Call the function you just wrote and store the
// answer in the variable evens declared above

// This will print the number of evens in the array.
cout << endl << evens;
  
cout << "\nPart 4" << endl;
  
// Part 4
// Write a function called computeTotalOdds. It takes in an array and
// an integer that has the number of values in the array. It will return
// the total of all of the odd numbers in the array
  
int total;
// Call the function you just wrote and store the answer
// in the variable total declared above

// This will print the total out
cout << endl << total;

return 0;
}

Answer 1

/******************************************************************************

Online C++ Compiler.
Code, Compile, Run and Debug C++ program online.
Write your code in this editor and press "Run" button to compile and execute it.

*******************************************************************************/

#include <iostream>

using namespace std;

void printAll(int arr[],int n){
   for(int i=0;i<n;i++)
       cout<<arr[i]<<" ";
   cout<<endl;
}
int printEven(int arr[], int n){
  
   int count=0;
   for(int i=0;i<n;i++){
       if(arr[i]%2==0){
           cout<<arr[i]<<" ";
           count++;
       }
      
   }
   cout<<endl;

   return count;

}
int computeTotalOdds(int arr[], int n){
  
   int total=0;
   for(int i=0;i<n;i++){
       if(arr[i]%2==1){
           total+=arr[i];
       }
      
   }
   cout<<endl;

   return total;

}
int main()
{
int array1[20] = {3, 18, 1, 25, 4, 7, 30, 9, 80, 16, 17};
int numElements = 11;

cout << "Part 1" << endl;

// Part 1
// Enter the statement to print the numbers in index 4 and index 9
// put a space in between the two numbers
cout<<array1[4]<<" "<<array1[9];
cout << endl;

cout<<array1[0]<<" "<<array1[8];

// Enter the statement to print the numbers 3 and 80 from the array above
// put a space in between the two numbers
cout << endl;

array1[2]=12;
// Enter the statement to change the number 1 in the array to be 12
// then write the statement to print out that number in the array
cout<<array1[2];
cout << "\nPart 2" << endl;

// Part 2
// Write a function called printAll. It takes in an array
// and an integer that has the number of values in the array.
// The function should print all the numbers in the array with
// a space between each one.
// Call the function on the line below.
  
printAll(array1,numElements);
cout << "\nPart 3" << endl;

// Part 3
// Write a function called printEven. It takes in an array and
// an integer that has the number of values in the array. It prints
// all the even numbers in the array with a space between each one.
// This function returns the count of evens.
int evens = printEven(array1,numElements);
// Call the function you just wrote and store the
// answer in the variable evens declared above

// This will print the number of evens in the array.
cout << endl << evens;
  
cout << "\nPart 4" << endl;
  
// Part 4
// Write a function called computeTotalOdds. It takes in an array and
// an integer that has the number of values in the array. It will return
// the total of all of the odd numbers in the array
  
int total=computeTotalOdds(array1,numElements);
// Call the function you just wrote and store the answer
// in the variable total declared above

// This will print the total out
cout << endl << total;

return 0;
}