Minute Program output problems

Cobalt · 10-11-2003, 05:00 PM

Hey, i'm just learning c++ and a program i wrote awhile ago i am going back to fix and am having problems.

Specs: obtain minutes from user then output as hours:minutes
example: input 327 from user output 5:27

problem i'm having is if they input 302 etc. i get 5:2 rather than 5:02 or if they put 300 minutes it comes out with 5:0

My book says it's possible and says (hint: Use the modulus operator)

what i have:
===========================

Code:

#include <iostream.h>

int main ()
{
	int minutes;
	
	cout << endl;
	cout << endl;
	cout << "\tEnter the number of minutes: ";
	cin >> minutes;



	cout << "\tThis is " << (minutes/60) << ":" << (minutes%60);

	cout << endl;
	cout << endl;
	cout << endl;
	cout << "\t";
	return (0);
}

Lynux-Penguin · 10-11-2003, 05:07 PM

Code:

#include <iostream.h>

int main ()
{
	int minutes;
	
	cout << endl;
	cout << endl;
	cout << "\tEnter the number of minutes: ";
	cin >> minutes;



	cout << "\tThis is " << (minutes/60) << ":";
	if((minutes%60)<10)
		cout<<"0"<<minutes%60;
	else
		cout<<minutes%60;

	cout << endl;
	cout << endl;
	cout << endl;
	cout << "\t";
	return (0);
}

-LC

Cobalt · 10-11-2003, 05:09 PM

Thanks for that speedy response man i was pretty suprised, but i can't use if else statements or any if type statements says i am able to do it with simply using mod

Lynux-Penguin · 10-11-2003, 05:15 PM

i dont think you can because the '0' won't be included if it's less than 10 no matter what, but if it explicitly says just ifs and elses try:

Code:

#include <iostream.h>
#include <iomanip.h>
int main ()
{
	int minutes;
	
	cout << endl;
	cout << endl;
	cout << "\tEnter the number of minutes: ";
	cin >> minutes;



	cout << "\tThis is " << (minutes/60) << ":";
	minutes%60<10 ? cout<<"0"<<minutes%60 : cout<<minutes%60;


	cout << endl;
	cout << endl;
	cout << endl;
	cout << "\t";
	return (0);
}

-LC

XSquared · 10-11-2003, 05:58 PM

Code:

#include <iostream> //iostream, not iostream.h
#include <iomanip> // for setw

using namespace std;

int main ()
{
	int minutes;
	
	cout << endl;
	cout << endl;
	cout << "\tEnter the number of minutes: ";
	cin >> minutes;



	cout << "\tThis is " << (minutes/60) << ":" << setw( 2 )<< (minutes%60);

	cout << endl;
	cout << endl;
	cout << endl;
	cout << "\t";
	return (0);
}

Lynux-Penguin · 10-11-2003, 06:15 PM

XSquared is right but that doesn't output a 0 it just has a space.

-LC

XSquared · 10-11-2003, 06:24 PM

Code:

cout << "\tThis is " << (minutes/60) << ":" << setfill( '0' ) << setw( 2 )<< (minutes%60);

Lynux-Penguin · 10-11-2003, 06:26 PM

wow, i'll be darned there is a way. I didn't know about setfill tho. hmm, that could prove usefull.

-LC

Cobalt · 10-11-2003, 11:03 PM

Write a program that allows the user to enter a time in minutes
and then displays the time in hours:minutes format. The program output should look similar to:

Enter teh number of minutes: 327
This is 5:27

Be sure toe consider ime where the number of minutes left over is fewer than 10. For example, 184 minutes should display 3:04. (Hint: use the modulus operator.)

This is the actual problem that is in my textbook, it is in the lawrenceville press A guide to programming in C++ book, and because it says use modulus operator it makes me think i have to use it 2x's or something but it's in chapter 3 of the book so it's simple stuff no other binaries or if statments etc. so it must be possible since it's a published problem in a educational textbook.

jlou · 10-11-2003, 11:29 PM

Code:

int num = 502;
int digit = num % 10;
// Right now: digit = 2;

num = num / 10;
digit = num % 10;
// Right now: digit = 0;

num = num / 10;
digit = num % 10;
// Right now: digit = 5;

Does that help?

Lynux-Penguin · 10-11-2003, 11:30 PM

other than that it's not
0 will never appear before a number without a special flag set or a function to output it as such. Or an IF statement.

[edit]: I am again proven wrong!

-LC

Cat · 10-12-2003, 12:29 AM

Well, you could always do:

cout << "\tThis is " << (minutes/60) << ":" << ((minutes%60)/10) << ((minutes%60)%10);

Cobalt · 10-12-2003, 10:16 AM

Thanks for the awesome help guys i really appreciate it, it works great now, glad i've found somewhere i can get help if i need it.

10-11-2003, 05:00 PM	#1
Cobalt Registered User Join Date: Oct 2003 Posts: 4	Minute Program output problems Hey, i'm just learning c++ and a program i wrote awhile ago i am going back to fix and am having problems. Specs: obtain minutes from user then output as hours:minutes example: input 327 from user output 5:27 problem i'm having is if they input 302 etc. i get 5:2 rather than 5:02 or if they put 300 minutes it comes out with 5:0 My book says it's possible and says (hint: Use the modulus operator) what i have: =========================== Code: #include <iostream.h> int main () { int minutes; cout << endl; cout << endl; cout << "\tEnter the number of minutes: "; cin >> minutes; cout << "\tThis is " << (minutes/60) << ":" << (minutes%60); cout << endl; cout << endl; cout << endl; cout << "\t"; return (0); }
Cobalt is offline

10-11-2003, 05:07 PM	#2
Lynux-Penguin Comment your source code! Join Date: Apr 2002 Posts: 533	Code: #include <iostream.h> int main () { int minutes; cout << endl; cout << endl; cout << "\tEnter the number of minutes: "; cin >> minutes; cout << "\tThis is " << (minutes/60) << ":"; if((minutes%60)<10) cout<<"0"<<minutes%60; else cout<<minutes%60; cout << endl; cout << endl; cout << endl; cout << "\t"; return (0); } -LC __________________ Asking the right question is sometimes more important than knowing the answer. Please read the FAQ C Reference Card (A MUST!) Pointers and Memory The Essentials CString lib
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10-11-2003, 05:09 PM	#3
Cobalt Registered User Join Date: Oct 2003 Posts: 4	Thanks for that speedy response man i was pretty suprised, but i can't use if else statements or any if type statements says i am able to do it with simply using mod
Cobalt is offline

10-11-2003, 05:15 PM	#4
Lynux-Penguin Comment your source code! Join Date: Apr 2002 Posts: 533	i dont think you can because the '0' won't be included if it's less than 10 no matter what, but if it explicitly says just ifs and elses try: Code: #include <iostream.h> #include <iomanip.h> int main () { int minutes; cout << endl; cout << endl; cout << "\tEnter the number of minutes: "; cin >> minutes; cout << "\tThis is " << (minutes/60) << ":"; minutes%60<10 ? cout<<"0"<<minutes%60 : cout<<minutes%60; cout << endl; cout << endl; cout << endl; cout << "\t"; return (0); } -LC __________________ Asking the right question is sometimes more important than knowing the answer. Please read the FAQ C Reference Card (A MUST!) Pointers and Memory The Essentials CString lib
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10-11-2003, 05:58 PM	#5
XSquared C++ Developer Join Date: Jun 2002 Location: UWaterloo Posts: 2,718	Code: #include <iostream> //iostream, not iostream.h #include <iomanip> // for setw using namespace std; int main () { int minutes; cout << endl; cout << endl; cout << "\tEnter the number of minutes: "; cin >> minutes; cout << "\tThis is " << (minutes/60) << ":" << setw( 2 )<< (minutes%60); cout << endl; cout << endl; cout << endl; cout << "\t"; return (0); } __________________ Naturally I didn't feel inspired enough to read all the links for you, since I already slaved away for long hours under a blistering sun pressing the search button after typing four whole words! - Quzah You. Fetch me my copy of the Wall Street Journal. You two, fight to the death - Stewie
XSquared is offline

10-11-2003, 06:15 PM	#6
Lynux-Penguin Comment your source code! Join Date: Apr 2002 Posts: 533	XSquared is right but that doesn't output a 0 it just has a space. -LC __________________ Asking the right question is sometimes more important than knowing the answer. Please read the FAQ C Reference Card (A MUST!) Pointers and Memory The Essentials CString lib
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10-11-2003, 06:24 PM	#7
XSquared C++ Developer Join Date: Jun 2002 Location: UWaterloo Posts: 2,718	Code: cout << "\tThis is " << (minutes/60) << ":" << setfill( '0' ) << setw( 2 )<< (minutes%60); __________________ Naturally I didn't feel inspired enough to read all the links for you, since I already slaved away for long hours under a blistering sun pressing the search button after typing four whole words! - Quzah You. Fetch me my copy of the Wall Street Journal. You two, fight to the death - Stewie
XSquared is offline

10-11-2003, 06:26 PM	#8
Lynux-Penguin Comment your source code! Join Date: Apr 2002 Posts: 533	wow, i'll be darned there is a way. I didn't know about setfill tho. hmm, that could prove usefull. -LC __________________ Asking the right question is sometimes more important than knowing the answer. Please read the FAQ C Reference Card (A MUST!) Pointers and Memory The Essentials CString lib
Lynux-Penguin is offline

10-11-2003, 11:03 PM	#9
Cobalt Registered User Join Date: Oct 2003 Posts: 4	Write a program that allows the user to enter a time in minutes and then displays the time in hours:minutes format. The program output should look similar to: Enter teh number of minutes: 327 This is 5:27 Be sure toe consider ime where the number of minutes left over is fewer than 10. For example, 184 minutes should display 3:04. (Hint: use the modulus operator.) This is the actual problem that is in my textbook, it is in the lawrenceville press A guide to programming in C++ book, and because it says use modulus operator it makes me think i have to use it 2x's or something but it's in chapter 3 of the book so it's simple stuff no other binaries or if statments etc. so it must be possible since it's a published problem in a educational textbook.
Cobalt is offline

10-11-2003, 11:29 PM	#10
jlou Registered User Join Date: Jul 2003 Posts: 1,088	Code: int num = 502; int digit = num % 10; // Right now: digit = 2; num = num / 10; digit = num % 10; // Right now: digit = 0; num = num / 10; digit = num % 10; // Right now: digit = 5; Does that help?
jlou is offline

10-11-2003, 11:30 PM	#11
Lynux-Penguin Comment your source code! Join Date: Apr 2002 Posts: 533	other than that it's not 0 will never appear before a number without a special flag set or a function to output it as such. Or an IF statement. [edit]: I am again proven wrong! -LC __________________ Asking the right question is sometimes more important than knowing the answer. Please read the FAQ C Reference Card (A MUST!) Pointers and Memory The Essentials CString lib
Lynux-Penguin is offline

10-12-2003, 12:29 AM	#12
Cat Registered User Join Date: May 2003 Posts: 1,199	Well, you could always do: cout << "\tThis is " << (minutes/60) << ":" << ((minutes%60)/10) << ((minutes%60)%10); __________________ You ever try a pink golf ball, Wally? Why, the wind shear on a pink ball alone can take the head clean off a 90 pound midget at 300 yards.
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10-12-2003, 10:16 AM	#13
Cobalt Registered User Join Date: Oct 2003 Posts: 4	Thanks for the awesome help guys i really appreciate it, it works great now, glad i've found somewhere i can get help if i need it.
Cobalt is offline

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