ماشین حساب در ++C

ماشين حساب

ماشين حساب

/*
Author: Wilton Marranzini
Objective: Program calculates the fule effiency of the car on the trip in
miles/gallon and the cost for gasoline at the end of the trip.
*/
#include <iostream.h> //including lib.
#include <math.h> //including lib.
#include <cstring.h> //including lib.
//Prototypes functions
void description();//Description cout fuction.
float full_efficiency(int miles, int gallons);//efficiency function.
float cost(float price, int gallons); //Cost function.
int main()//Main Function

    { string gas_station;//String for gas station name.
    int num_miles; // Variable for number of miles
    int num_gallons;//Variable for number of gallons.
    float price_per_gallons;//Variable for price per gallons.
    float efficiency; //variable for efficiency.
    float cos; //variable for cost
    int a; //keeps screen function
    description(); //Discription function
    cout<< "Enter gas station name\n";
    getline(cin, gas_station); //Getting gas station title
    cout<< "Name of gas station Is " << gas_station <<".\n";
    cout<<endl;
    cout<< "Enter the numbers of miles travel.\n";
    cin>>num_miles;//storing numbers of miles
    cout<< "Enter the number of gallons of gasoline purchased.\n";
    cin>>num_gallons;//storing number of gallons
    cout<< "Enter the Price per gallons.\n";
    cin>>price_per_gallons;//storing price per gallons
    efficiency = full_efficiency(num_miles,num_gallons);//calling function.
    cos =cost(price_per_gallons,num_gallons);//calling function.
    cout<<"The efficiency is "<<efficiency<<" for "
    <<num_miles<<" miles per number of "<<num_gallons<<" gallons\n";
    cout<<"Gallons used on the trip is "<<num_gallons<<" The cost of the trip "
    <<"is "<<"$"<< cos <<endl;
    cin>>a; //keeps screen open
    return 0;//returning value
}

void description()

    {
     cout<< "Program calculates the fule effiency of the car on the trip\n"
     << "in miles/gallon and the cost for gasoline at the end of the\n"
    << "trip.\n";
}

float full_efficiency(int miles, int gallons)

    {
     float efficien; //efficiency variable
     efficien = miles/gallons;
     return (efficien);//returning value
}

float cost(float price, int gallons)

    {
     float charge;//charge variable
    charge = price*gallons;
    return (charge); //returning value
}