Thread: Need Help

Hey Guys I need help.....I am new to programming and I am taking a C class. I use Dev C++ as my compiler. This is my code but when i run it Dos wont stay up....can you guys give me some info to keep dos open??? Thanks Clezzie

Code:

// This Program will convert Kelvin to degrees Rankin

#include <math.h>
#include <stdio.h>

int main()
{
	/* Declare Vairables*/
	int rankin = (9/5);
	float kelvin = rankin - 459.67;
	
	// print degrees in farenhiet
	printf("Kelvin converted in to degrees is %4.2f\n",kelvin);
	return 0;
}

http://faq.cprogramming.com/cgi-bin/...&id=1043284385

Edit to note: You've got a lot of surprises waiting in your code, too, so we'll be expecting to here more.

Originally Posted by tabstop

http://faq.cprogramming.com/cgi-bin/...&id=1043284385

Edit to note: You've got a lot of surprises waiting in your code, too, so we'll be expecting to here more.

Thanks...how would i run it from command though???

Originally Posted by clezzie

Thanks...how would i run it from command though???

Open a command prompt window. Navigate to the directory where you put your program. Type the name of the program. (You don't have to type the ".exe" part.)

Originally Posted by clezzie

Hey Guys I need help.....I am new to programming and I am taking a C class. I use Dev C++ as my compiler. This is my code but when i run it Dos wont stay up....can you guys give me some info to keep dos open??? Thanks Clezzie

Code:

// This Program will convert Kelvin to degrees Rankin

#include <math.h>
#include <stdio.h>

int main()
{
	/* Declare Vairables*/
	int rankin = (9/5);
	float kelvin = rankin - 459.67;
	
	// print degrees in farenhiet
	printf("Kelvin converted in to degrees is &#37;4.2f\n",kelvin);
	return 0;
}

Do you REALLY think that an int, could somehow be assigned a value of 9/5?



system ("pause"), will hold a console window open. Not the best programming practice, but good enough for now.

Originally Posted by Adak

Do you REALLY think that an int, could somehow be assigned a value of 9/5?

You know those computers are magical things, with their own weird arithmetic and everything!

Originally Posted by tabstop

Open a command prompt window. Navigate to the directory where you put your program. Type the name of the program. (You don't have to type the ".exe" part.)

Ok i am running vista....i am new to programming and i dont know how i would navigate it to that directory...can i get some instructions?? it is in my doucuments in a folder called C Programs

Originally Posted by Adak

Do you REALLY think that an int, could somehow be assigned a value of 9/5?



system ("pause"), will hold a console window open. Not the best programming practice, but good enough for now.

LOL i am very new...and a noob to this...but system ("pause")...where would i place this???

ok i just put it at the bottom of my code right before return 0.....my compiler is saying 16 C:\Users\Clezzie\C Programs\practice.cpp `system' undeclared (first use this function)

Originally Posted by clezzie

ok i just put it at the bottom of my code right before return 0.....my compiler is saying 16 C:\Users\Clezzie\C Programs\practice.cpp `system' undeclared (first use this function)

To navigate to a directory, you use the "cd" (change directory) command, so you should probably type

Code:

cd "C Programs"

(although the quotes aren't strictly necessary).

The system() function is defined in the <stdlib.h> header.

Originally Posted by dwks

cpwiki.sf.net/Pause_console


As far as I know, the last quote isn't necessary, but the first one is. I could be wrong -- it's been a while since I used a Windows console in any capacity.

Normally you need quotes, but cd is "special": it knows that the only thing that can follow is a path and nothing but a path, so it doesn't try to split the command line into pieces. It's new-ish.