I am taking a C++ programming class for engineer students and was wondering if any one here has experience with it. I have a home work assignment im looking for help on. Any help is appreciated.
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Anyone into C++ progamming?
- Thread starter mk3supra
- Start date
LOL, your not supposed to pay someone to program for you. Your supposed to learn and understand the work. I used to do a little bit of C++ but I'm heavily involved with JAVA now, its hard, but it is multi platform which is great.
Well, I am a beginner also and don't understand what is going on in class because I cannot understand the teacher when she talks. I just need help writing a program and understanding it.
D34DC311;1306105 said:
bah, I was forced to take a similar class, and have not used C++ since.
Off the record, I may have done a few assignments in "groups". Had I not, I probably would not have passed the class all those years ago...
Yea, same here, its required for my degree. If it were my choice I wouldn't be in the class because I have no interest in programming. This is what I have to do
Write a program that includes two functions next_day( ) and prior_day( ).
Function next_day( ) increments a date by one day. Test your function to ensure that it correctly increments days into a new month and into new year.
prior_day( ) function decrements a date by one day. Test your function to ensure that it correctly decrements days into a prior month and into prior year.
your output should be as shown below:
>welcome to date processor.
>Please enter the date
>11 22 2008
> next day - 11/23/2008
>prior day – 11/22/2008
>please enter 'y' if you want to continue or 'Q' to quit: y
>please enter the date
>11 30 2008
>next day – 1/31/2008
>prior day – 11/29/2008
>please enter 'y' if you want to continue or 'Q' to quit: y
>please enter the date
> 2 28 2008
>next day - 2/29/2008
>prior day – 2/28/2008
>please enter 'y' if you want to continue or 'Q' to quit: y
>please enter the date
>31 1 2009
>sorry, the date you entered cannot be recognized, please enter a valid date:
> 1 1 2009
>next day – 1/2/2009
>prior day – 12/31/2008
>please enter 'y' if you want to continue or 'Q' to quit: Q
>Thank you for using our date processor. Have a great day!
Write a program that includes two functions next_day( ) and prior_day( ).
Function next_day( ) increments a date by one day. Test your function to ensure that it correctly increments days into a new month and into new year.
prior_day( ) function decrements a date by one day. Test your function to ensure that it correctly decrements days into a prior month and into prior year.
your output should be as shown below:
>welcome to date processor.
>Please enter the date
>11 22 2008
> next day - 11/23/2008
>prior day – 11/22/2008
>please enter 'y' if you want to continue or 'Q' to quit: y
>please enter the date
>11 30 2008
>next day – 1/31/2008
>prior day – 11/29/2008
>please enter 'y' if you want to continue or 'Q' to quit: y
>please enter the date
> 2 28 2008
>next day - 2/29/2008
>prior day – 2/28/2008
>please enter 'y' if you want to continue or 'Q' to quit: y
>please enter the date
>31 1 2009
>sorry, the date you entered cannot be recognized, please enter a valid date:
> 1 1 2009
>next day – 1/2/2009
>prior day – 12/31/2008
>please enter 'y' if you want to continue or 'Q' to quit: Q
>Thank you for using our date processor. Have a great day!
I did it and enjoyed it... 9 years ago.
Oh, and Java sucks, sure it's universal...but it's universaly SLOW.
Oh, and Java sucks, sure it's universal...but it's universaly SLOW.
Not really, as it all rolls over as they're all enhancements of C. It's more of a grammar difference than a language difference if you get what I mean...
I took C++ a while back at university. Introduction to programming, my biggest suggestion is to write the program out on paper first, it seemed to help me out. I cant really remember much about the actual program, but if you need a hand with an algorithm or something I may be able to help you out....
I did a c++ course in grade 12, it was easy at first but then it snowballed like crazy all of a sudden. I found it makes things a lot easier to find a sample program that does something similar and pick it apart to find out how it works than to read a book on it or even have someone explain it to you. There's quite a few forums where you can find those programs on.
I've been working on this and here is what I have so far. I think I am getting close but I am still having problems.
Code:
#include<iostream>
#define TRUE 1
#define FALSE 0
using namespace std;
class mydate{
int day;
int month;
int year;
public:
void readdate();
int isLeapYear();
string month2string();
int exceedsDaysInMonth();
void tommorow();
void yesterday();
};
// Input date from user
void mydate::readdate(){
cout << "Enter day (dd - 23 ) : ";
cin >> day;
cout << "Enter Month (mm - 04 ) : ";
cin >> month;
cout << "Enter year (yyyy - 2007 ) : ";
cin >> year;
}
// make sure month days are correct
// return TRUE if days exceeds in a month
int mydate::exceedsDaysInMonth(){
int days[] = {31,28,31,30,31,30,31,31,30,31,30,31};
if ( month < 1 || month > 12 || day > days[month-1])
return TRUE;
else
return FALSE;
}
// convert numeric month into string
string mydate::month2string(){
char *months[] = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
if ( exceedsDaysInMonth() ) {
if ( ! (month < 1 || month > 12) )
return months[month-1];
else
return "Unknown month";
}
else
return "Unknown month";
}
// return TRUE if a year is leap
int mydate::isLeapYear(){
if ( (year % 4) != 0 ){
return FALSE;
}
else if ( (year % 400) != 0 ){
return TRUE;
}
else if ( (year % 100) == 0 ){
return FALSE;
}
else
{
return FALSE;
}
}
// validate and calculate tommorows date
void mydate::tommorow(){
int td, tm, ty;
int days[] = {31,28,31,30,31,30,31,31,30,31,30,31};
if ( year < 0 ){
cerr << year << " is not a valid year" << endl;
exit(1);
}
if ( exceedsDaysInMonth() ){
if ( month == 2 && day == 29 ){
if ( ! isLeapYear() ){
cerr << year << " is not a leap year, so Feb doesn't have 29 days" << endl;
exit(1);
}
}
else
{
cerr << "Bad day value month - " << month << " (" << month2string();
cerr << ") doesn't have " << day << " days "<< endl;
exit(1);
}
}
// calculate tommorow
td=day;
tm=month;
ty=year;
td++;
if ( td > days[month-1]){
td=1;
tm++;
if ( tm > 12 )
{ ty++; tm=1; }
}
cout << "Tommorow is " << td << "/" << tm << "/" << ty << endl;
}
}
// calculate yesterday
td=day;
tm=month;
ty=year;
td--;
if ( td > days[month-1]){
td=1;
tm--;
if ( tm > 12 )
{ ty--; tm=1; }
}
cout << "Yesterday was " <<td << "/" << tm << "/" << ty << endl;
// main
int main(){
mydate date;
date.readdate();
date.tommorow();
return 0;
}
you have some extra brackets in your code (line 102). leap year doesn't work, check your isLeapYear() code. For example, year 2000 was a leap year and 2000 modulus 4 is 0. So your check for for != 0 is incorrect if you're trying to find out if the supplied value (i guess it's a global /handslap) IS a leap year.
Also, be sure to follow the template. The instructor and markers are expecting the input to be of the example form, and looped. Put a loop in your main, watch for Y or Q. If you're having troubles 'parsing' the individual values from a single input string separated by spaces, look up string tokenizing...
Also, be sure to follow the template. The instructor and markers are expecting the input to be of the example form, and looped. Put a loop in your main, watch for Y or Q. If you're having troubles 'parsing' the individual values from a single input string separated by spaces, look up string tokenizing...