Question

17.9 Worksheet 7

Follow the instructions commented into the given template. There will be no partial credit given.

#include <iostream>
using namespace std
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

//rate my solution and comment if any doubts

Note:

//please do observe the comments that i mentioned you can change your code to your convenience. I wrote 'or' in my solution

Code:

#include <iostream>
using namespace std;
int printAll(int array1[],int numElements)
{
   for(int i=0;i<numElements;i++)
       cout<<array1[i]<<" ";
}
int printEven(int array1[],int numElements)
{
   int c=0; //store count
   for(int i=0;i<numElements;i++)
   {
       if(array1[i]%2==0) //to check if even

{
           c++;
           cout<<array1[i]<<" ";
       }
   }
   return c;
}
int computeTotalOdds(int array1[],int numElements)
{
   int c=0; //to store count
   for(int i=0;i<numElements;i++)
   {
       if(array1[i]%2!=0) // to check if odd
       {
           c++;
           //cout<<array1[i]<<" ";//to print odd numbers if you want to
       }
   }
   return c;
}
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;
// Enter the statement to print the numbers 3 and 80 from the array above
// put a space in between the two numbers
for(int i=0;i<11;i++)
{
   if(array1[i]==3 or array1[i]==80)
       cout<<array1[i]<<" ";
}
/*or you can also use
cout<<array1[0]<<" "<<array1[8];
*/
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
int i;
for(i=0;i<11;i++)
   if(array1[i]==1)
   {
       array1[i]=12;
       break;
   }
cout<<array1[i];
/*or you can also use
array1[2]=12;
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;
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;
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;
}

Output:

Code(Screen shots):