Step 4: Implement/call a function to change the value of the third component in

Question

Step 4: Implement/call a function to change the value of the third component in the array to 15.9

Step 5: Implement/call a function to print out all of the elements in the array on screen.

Step 6: Implement/call a function to calculate the sum of all the components and print the sum on screen.

Step 7: Implement/call a function to change all values under 5.3 to 8.8 using a loop and an if statement.

Step 8: Call the function to print out all of the elements in the array on screen.

Step 9: Implement/call a function that allows the user to change each of the values in the array. The function must prompt the user to "Enter a value:" each time.

Step 10: Call the function to print out all of the elements in the array on screen.

#include<iostream>
using namespace std;

int main()
{
int rows;
double qArray[10] = {3.7, 12.3, 4.5, 10.6, 2.3, 5.4, 9.8, 15.2, 7.7, 19.8};
double sum = 0;

qArray[2] = 15.9;

   for (int rows = 0; rows < 10; rows++)
   {
   cout << qArray[10] << endl;
   }
   cout << endl;
   cout << endl;

   for (int rows = 0; rows < 10; rows++)
   {
       sum = sum + qArray[10];
   }

system("pause");
return 0;
}

Explanation / Answer

I have copied your code and made changes wherever necessary and marked each step..

#include<iostream>
using namespace std;
void printArray(double q[])
{
for (int rows = 0; rows < 10; rows++)
{
cout << q[rows] << endl;
}
cout << endl;
cout << endl;

}

int main()
{
int rows;
double qArray[10] = {3.7, 12.3, 4.5, 10.6, 2.3, 5.4, 9.8, 15.2, 7.7, 19.8};
double sum = 0;
//Step 4
qArray[2] = 15.9;
//step 5
for (int rows = 0; rows < 10; rows++)
{
cout << qArray[rows] << endl;
}
cout << endl;
cout << endl;
//step 6
for (int rows = 0; rows < 10; rows++)
{
sum = sum + qArray[rows];
}
cout<<sum<<endl<<endl<<endl;
//step 7
for (int rows = 0; rows < 10; rows++)
{
if(qArray[rows]<5.3)
{
qArray[rows]=8.8;
}
}
//step 8
printArray(qArray);
//step 9
for (int rows = 0; rows < 10; rows++)
{
cout <<"Enter a value at row "<<rows<<": ";
cin>>qArray[rows];
}
//step 10
printArray(qArray);

system("pause");
return 0;
}

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