Question

If necessary, create a new project named Intermediate23 Project and save it in the Cpp8\Chap12 folder. Also create a new source file named Intermediate23.cpp. Declare a seven-row, two-column int array named temperatures. The program should prompt the user to enter the highest and lowest temperatures for seven days. Store the highest temperatures in the first column in the array. Store the lowest temperatures in the second column. The program should display the average high temperature and the average temperature. Display the average temperatures with one place. Save and then run the program. Test the program using the data shown in Figure 12-19.

Answer 1

#include <iostream>
#include <iomanip> // std::setprecision
using namespace std;

int main()
{
// Declaring variables
int rows = 7;
int cols = 2;

// Declaring variable
int temps[rows][cols];

/* getting the highest and lowest
* temperatures entered by the user
*/
for (int i = 0; i < rows; i++)
{
cout << "Day#" << i + 1 << endl;
for (int j = 0; j < cols; j++)
{
if (j == 0)
{
cout << "Enter the Highest Temperature :";
cin >> temps[i][j];
}
else if (j == 1)
{
cout << "Enter the Lowest Temperature :";
cin >> temps[i][j];
}
}
}

// Displaying the data in table format
cout << "\nDay\tHighest\tLowest" << endl;
cout << "---\t-------\t------" << endl;
for (int i = 0; i < rows; i++)
{
cout << i + 1 << "\t";
for (int j = 0; j < cols; j++)
{
cout << temps[i][j] << "\t";
}
cout << endl;
}

int sum = 0;
double average = 0.0;

// Setting the precision to one decimal
std::cout << std::setprecision(1) << std::fixed;
cout << "\nAverage\t";

/* This for loop will calculate the average
* of highest and lowest temperatures
*/
for (int j = 0; j < cols; j++)
{

for (int i = 0; i < rows; i++)
{
sum += temps[i][j];
}
cout << ((double)sum / rows) << "\t";
sum = 0;
}

return 0;
}

______________________

Output:

CProgram Files (x86)\Dev-Cpp MinGW64\bin TemperatureHighestlowestin7rows2ColsArray.exe Day#1 Enter the Highest Temperature 95 Enter the Lowest Temperature 6 Day#2 Enter the Highest Temperature 98 Enter the Lowest Temperature 54 Day#3 Enter the Highest Temperature 86 Enter the Lowest Temperature 70 Day#4 Enter the Highest Temperature 99 Enter the Lowest Temperature 56 Day#5 Enter the Highest Temperature 83 Enter the Lowest Temperature 34 Day#6 Enter the Highest Temperature 75 Enter the Lowest Temperature 68 Day#7 Enter the Highest Temperature 80 Enter the Lowest Temperature 45 Day Highest Lowes t 95 98 86 67 54 70 56 34 68 45 4 83 75 80 2 Average 88.0 Process exited after 26.53 seconds with return value 0 Press any key to continue .. . 56.3

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