C++ Convert

Discussion in 'Programming' started by scottlpool2003, Oct 12, 2008.

0
  1. #1
    Hi guys...

    I'm a student having a bit of trouble with my assignment.

    The assignment is to make a program for a phone company to calculate call durations, costs, discounts etc...

    I need the user to input call start time in 24 hour style... and end time.

    In order to calculate the call I need to seperate hours from minutes... I'm sure this can be done by converting the numbers from/to string or something.

    Input Call Start Time: 0800
    Input Call End Time: 0815

    Calculating it with these numbers would give 55 mins when the duration is actually 15 minutes.

    Can anybody help?

    Much appreciated
     
    scottlpool2003, Oct 12, 2008 IP
  2. scottlpool2003

    scottlpool2003 Well-Known Member

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    #2
    Here's what I have so far...

    //A Scott Brade incorporated program
//10/10/08

#include <iostream.h>
#include<stdio.h>

double mins,S_TIME,E_TIME,totmins,fullcost,actualcost,discount,day1,time;
char day;



void parking()


//days menu


{
{
cout<<"+----------------------------+\n";
cout<<"|          M = Monday        |\n";
cout<<"|          U = Tuesday       |\n";
cout<<"|          W = Wednesday     |\n";
cout<<"|          T = Thursday      |\n";
cout<<"|          F = Friday        |\n";
cout<<"|          A = Saturday      |\n";
cout<<"|          S = Sunday        |\n";
cout<<"+----------------------------+\n\n";
}



//user input




cout<<"            +---------------------------------------+\n";
cout<<"            |            Input Section              |\n";
cout<<"            +---------------------------------------+\n\n\n";
cout<<"Please enter call start time\n\n";
cin>>S_TIME;
cout<<"\n\n";
cout<<"Please enter call end time\n\n";
cin>>E_TIME;
int convert(char time[5])

{
	int time_mins;
	int int_time[4];

		int_time[0]=time[0] - '0';
		int_time[1]=time[1] - '0';
		int_time[2]=time[2] - '0';
		int_time[3]=time[3] - '0';


time_mins = int_time[0] * 1000 + int_time[1] * 100 + int_time[2] * 10 + int_time[3];
return time_mins;
}

cout<<"\n\n";
cout<<"What day is it?\n\n";

cin>>day;
cout<<"\n\n";
cout<<"You entered ";
cout<<day;
cout<<" for ";


//call day


if (day =='M') { cout<<"Monday";}
else if (day =='U') { cout<<"Tuesday";}
else if (day =='W') { cout<<"Wednesday";}
else if (day =='T') { cout<<"Thursday";}
else if (day =='F') { cout<<"Friday";}
else if (day =='A') { cout<<"Saturday";}
else if (day =='S') { cout<<"Sunday";}
	


//calculations section



cout<<"\n\n";
cout<<"            +---------------------------------------+\n";
cout<<"            |            Calculations               |\n";
cout<<"            +---------------------------------------+\n\n\n";

cout<<"+----------------------------+\n";
cout<<"|   Hourly rate:             |\n";
cout<<"|   --------------------     |\n";
cout<<"|   Start time:              |\n";
cout<<"|   --------------------     |\n";
cout<<"|   End time:                |\n";
cout<<"|   --------------------     |\n";
cout<<"|   Total duration:          |\n";
cout<<"|   --------------------     |\n";
cout<<"|   Full call cost:          |\n";
cout<<"|   --------------------     |\n";
cout<<"|   Discount:                |\n";
cout<<"|   --------------------     |\n";
cout<<"|   Actual call cost:        |\n";
cout<<"+----------------------------+\n\n";

}

void main()

{

     

	parking();



}
    PHP:
    I understand all of it apart from the function I've just found:

    int convert(char time[5])

{
	int time_mins;
	int int_time[4];

		int_time[0]=time[0] - '0';
		int_time[1]=time[1] - '0';
		int_time[2]=time[2] - '0';
		int_time[3]=time[3] - '0';


time_mins = int_time[0] * 1000 + int_time[1] * 100 + int_time[2] * 10 + int_time[3];
return time_mins;
}
    PHP:
    If someone can help me understand it, I'm sure I'll manage. :)
     
    scottlpool2003, Oct 12, 2008 IP
  3. scottlpool2003

    scottlpool2003 Well-Known Member

    Messages:
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    #3
    Thanks anyway guys, I managed to solve it.

    See code below:

    //A program to get call costs,durations,times


# include <iostream.h>
# include <stdio.h>
# include <ctype.h>

//Variables Declaration Section.


char Day,M,U,W,T,F,A,S,Weekday,START_TIME[5],END_TIME[5];


int StartTime,EndTime,HoursStartTime,MinutesStartTime,HoursEndTime,MinutesEndTime,TotalCallTime;



int convert (char time [5])



//Convert time


{
int time_mins;
int int_time[4];

		int_time[0]=time[0] - '0';
		int_time[1]=time[1] - '0';
		int_time[2]=time[2] - '0';
		int_time[3]=time[3] - '0';


time_mins = int_time[0] * 1000 + int_time[1] * 100 + int_time[2] * 10 + int_time[3];


return time_mins;
}




//Start/End Time

void GetTimes()
{

cout<< "Please enter call start time:\n\n";
cin>>START_TIME;
cout<<"\n\n";
cout<< "Please enter call end time:\n\n";
cin>>END_TIME;
cout<<"\n\n";
StartTime=convert(START_TIME);
EndTime=convert(END_TIME); 
}

//This Section Calculates The Start Time Of The Call. Works
void CalculateStartTime()
{
HoursStartTime=StartTime/100;
MinutesStartTime=StartTime%100;
MinutesStartTime =((HoursStartTime*60)+MinutesStartTime);
}

//This Section Calculates The End Time Of The Call. Works

void CalculateEndTime()
{

HoursEndTime=EndTime/100;
MinutesEndTime=EndTime%100;
MinutesEndTime =((HoursEndTime*60)+MinutesEndTime);
TotalCallTime=(MinutesEndTime-MinutesStartTime);
	{
cout<<"            +---------------------------------------+\n";
cout<<"            |            Results Section            |\n";
cout<<"            +---------------------------------------+\n\n\n\n\n";
}
cout<<"+--------------------------+\n";
cout<<"| Start Time: ";cout<<START_TIME;cout<<"         |\n";
cout<<"| End Time: ";cout<<END_TIME;cout<<"           |\n";
cout<<"| Duration: ";cout<<TotalCallTime;cout<<" mins        |\n";
cout<<"+--------------------------+\n\n\n";


//Error loop
if (TotalCallTime <600)
{
StartTime=convert(START_TIME);
EndTime=convert(END_TIME);
}
else
if(TotalCallTime !=600)
{
cout<<"Error, call time can't be more than 10 hours.\nPlease try again.\n\n";
cout<< "Enter call start time\n\n";
cin>>START_TIME;
cout<< " Enter call end time\n\n";
cin>>END_TIME;
StartTime=convert(START_TIME);
EndTime=convert(END_TIME);
}

}

//This Section Displays How To Input The Days Of The Week Correctly. Works

void GetDay()
{ 
Weekday = 'M','U','W','T','F','A','S';



{
cout<<"+----------------------------+\n";
cout<<"|          M = Monday        |\n";
cout<<"|          U = Tuesday       |\n";
cout<<"|          W = Wednesday     |\n";
cout<<"|          T = Thursday      |\n";
cout<<"|          F = Friday        |\n";
cout<<"|          A = Saturday      |\n";
cout<<"|          S = Sunday        |\n";
cout<<"+----------------------------+\n\n";
}
	{
cout<<"            +---------------------------------------+\n";
cout<<"            |            Input Section              |\n";
cout<<"            +---------------------------------------+\n\n\n";
}

cout<<"What day is it?\n\n";

cin>>Day;
cout<<"\n\n";
Day=toupper(Day); //Converts Lowercase To Uppercase.



cout<<"You entered ";
cout<<Day;
cout<<" for ";

if (Day =='M') { cout<<"Monday\n\n";}
else if (Day =='U') { cout<<"Tuesday\n\n";}
else if (Day =='W') { cout<<"Wednesday\n\n";}
else if (Day =='T') { cout<<"Thursday\n\n";}
else if (Day =='F') { cout<<"Friday\n\n";}
else if (Day =='A') { cout<<"Saturday\n\n";}
else if (Day =='S') { cout<<"Sunday\n\n";}
else {cout<<"Error day is incorrect\n\n";}


}








//This Section Calls All The Functions.

void main()

{
GetDay();
GetTimes();
CalculateStartTime();
CalculateEndTime();
}
    PHP:
     
    scottlpool2003, Oct 12, 2008 IP