Answer:
Explanation:
Gas Filling Station has pumps. Pumps have credit card readers. Driver can able to swipe their cards, pumps have Fuel. Pumps card readers communicate with Credit Company. Driver interacts with pump for fuel and credit card.
In this situation the following we need to treat as objects.
They are Pump, Card reader, Fuel tank, communication system, system controller and price table.
Design pattern for the following system is attached below
Answer:
Following code are:
int *temp; //declaration of variable
// perform swapping
temp = xp;
xp = yp;
yp = temp;
Explanation:
we declare an integer data type pointer variable "*temp" then perform swapping between them.
The variables "xp" and "yp" are already declared and these variables are performing swapping among three.
Answer:
a variable of type "double" is more suitable for finding average because average could be any number with decimal places. we can't use a variable of type "integer" because it will omit the value after the decimal and will not produce satisfactory results.
Explanation:
an example of C++ code is given to find the average of two numbers a and b
#include <iostream>;
using namespace std;
int main() {
double a = 2.334;
double b = 34;
double average = (a + b) / 2;
cout << average;
return 0;
}
