Question

I did a program in computer science c++. It worked fine the first and second time when I ran the program, but suddenly it gave me an error. Then, after a few minutes, it started to run again and then the error showed up again. This is due tonight but I do not know what is wrong with it. PLEASE HELP ME! Also, the instruction for the assignment, the code, and the error that occurred in the program are below.

INSTRUCTIONS:

Plan your program before starting. Point distribution is as follows:

1. Clean coding, "Logical Logic" and appropriate (not every line) commenting of the code: 20 points
2. User's ease of use of the program e.g. Instructions for the program, data input requests during execution of the program in a manner that makes the user easily understand what kind of data they need to enter etc. : 20 points
3. Accuracy of calculations and use of appropriate C++ functions/control structure statements: 20 points
4. Display of data at the end of the program after calculation - presentation: 30 points
   

ASSIGNMENT:

Write a C++ program that performs following and formatted results:

1. The output should show heading of Travel and Mileage Program.
2. Users should be able to enter one car type and details about the car - programmer should decide what details are appropriate based on the discussion in the class (out of four possible cars that your program can do calculations for).
3. Users should be able to input Travel Start and End destinations.
4. Users should be able to enter the total distance in miles between the start and end destination.
5. Based on the user's input, display following:
   1. Appropriate heading for the program with formatting using setfill().
   2. Display travel start and end destinations, Total distance to be traveled in miles and kilometers and other details for the vehicle to be used for the travel in more than one columns using setw().
   3. Display Total Gallons of fuel required to travel from start to end destination based on the data you researched about the four cars using control structure (if/else/else if) statements from C++. Formula for calculation is: Gallons of Fuel Required = Vehicle_Milage_Per_Gallon X Total_Number_of Miles

USE YOUR IMAGINATION AND CREATIVITY TO DISPLAY THE DATA IN PRESENTABLE, READABLE AND USEFUL MANNER!!

THE CODE:

#include <iostream>
#include <iomanip>
#include <string>
//Name space for I/O
using namespace std;

int main() {
string cType, cDes,start,end;
int distance;
float gallon, fReq;

cout << setfill('*') << setw(70) << " WELCOME TO TRAVEL AND MILEAGE ";
cout << setw(50) << setfill('*') << " " << endl;

cout <<setfill(' ') << setw(50)<<"Enter the car type : ";
getline(cin, cType);
  
cout <<setfill(' ') << setw(50) <<"Enter the car description : ";
getline(cin, cDes);

cout <<setfill(' ') << setw(50) << "Enter the starting location : ";
getline(cin, start);

cout <<setfill(' ') << setw(50) << "Enter the destination : ";
getline(cin, end);

cout << setfill(' ') << setw(50) << "Enter the distance in miles : ";
cin >> distance;

if (cType == "Ford escape") {
gallon = 2.831 * 18;
fReq = gallon * distance;
}
else if (cType == "Mazda6 I") {
gallon = 2.831 * 20;
fReq = gallon * distance;
}
else if (cType == "Nissan altima") {
gallon = 2.831 * 23;
fReq = gallon * distance;
}
else if (cType == "Honda accord") {
gallon = 2.831 * 24;
fReq = gallon * distance;
}
else {
cout << "Wrong entry";
}

cout <<endl<<endl<<setfill(' ') << setw(10) << "Car Type ";
cout <<setfill(' ') << setw(30) << "Car Desription ";
cout << setfill(' ') << setw(20) << "Start ";
cout << setfill(' ') << setw(20) << "Destination ";
cout << setfill(' ') << setw(10) << "Distance ";
cout << setfill(' ') << setw(10) << "FuelRequired "<<endl;
cout << setfill(' ') << setw(10) << "---------- ";
cout << setfill(' ') << setw(30) << "---------------- ";
cout << setfill(' ') << setw(20) << "------- ";
cout << setfill(' ') << setw(20) << "------------- ";
cout << setfill(' ') << setw(10) << "--------- ";
cout << setfill(' ') << setw(10) << "-------------- " << endl;
cout << setfill(' ') << setw(10) << cType;
cout << setfill(' ') << setw(40) << cDes;
cout << setfill(' ') << setw(15) << start;
cout << setfill(' ') << setw(15) << end;
cout << setfill(' ') << setw(10) << distance;
cout << setfill(' ') << setw(10) << fReq << endl;
return 0;

}

THE ERROR:

Traceback (most recent call last):
  File "/opt/online_gdb/www/ogdb_gui/ogdb/main/../pcompile.py", line 155, in <module>
  File "/usr/lib/python3.5/subprocess.py", line 947, in __init__
  File "/usr/lib/python3.5/subprocess.py", line 1551, in _execute_child
OSError: [Errno 5] Input/output error

Answer 1

There is nothing wrong with your code... It happens some time with "GDB online Debugger"... Execute the current program with "Interactive Console" option set.

C++ Program:

#include <iostream>
#include <iomanip>
#include <string>
//Name space for I/O
using namespace std;
int main() {
string cType, cDes,start,end;
int distance;
float gallon, fReq;

cout << setfill('*') << setw(70) << " WELCOME TO TRAVEL AND MILEAGE ";
cout << setw(50) << setfill('*') << " " << endl;

cout <<setfill(' ') << setw(50)<<"Enter the car type : ";
getline(cin, cType);
  
cout <<setfill(' ') << setw(50) <<"Enter the car description : ";
getline(cin, cDes);

cout <<setfill(' ') << setw(50) << "Enter the starting location : ";
getline(cin, start);

cout <<setfill(' ') << setw(50) << "Enter the destination : ";
getline(cin, end);

cout << setfill(' ') << setw(50) << "Enter the distance in miles : ";
cin >> distance;

if (cType == "Ford escape") {
gallon = 2.831 * 18;
fReq = gallon * distance;
}
else if (cType == "Mazda6 I") {
gallon = 2.831 * 20;
fReq = gallon * distance;
}
else if (cType == "Nissan altima") {
gallon = 2.831 * 23;
fReq = gallon * distance;
}
else if (cType == "Honda accord") {
gallon = 2.831 * 24;
fReq = gallon * distance;
}
else {
cout << "Wrong entry";
}

cout <<endl<<endl<<setfill(' ') << setw(10) << "Car Type ";
cout <<setfill(' ') << setw(30) << "Car Desription ";
cout << setfill(' ') << setw(20) << "Start ";
cout << setfill(' ') << setw(20) << "Destination ";
cout << setfill(' ') << setw(10) << "Distance ";
cout << setfill(' ') << setw(10) << "FuelRequired "<<endl;
cout << setfill(' ') << setw(10) << "---------- ";
cout << setfill(' ') << setw(30) << "---------------- ";
cout << setfill(' ') << setw(20) << "------- ";
cout << setfill(' ') << setw(20) << "------------- ";
cout << setfill(' ') << setw(10) << "--------- ";
cout << setfill(' ') << setw(10) << "-------------- " << endl;
cout << setfill(' ') << setw(10) << cType;
cout << setfill(' ') << setw(30) << cDes;
cout << setfill(' ') << setw(15) << start;
cout << setfill(' ') << setw(15) << end;
cout << setfill(' ') << setw(10) << distance;
cout << setfill(' ') << setw(10) << fReq << endl;
return 0;
}

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Sample Run: