Thread: Slope Formula

Can anyone see what is the problem here?

I am getting the message:

C:\DEV-C_~1\LIB\\libmingw32.a(main.o)(.text+0x8e): undefined reference to `WinMain@16'

And i am useing Dev-C++

-------------------------------------------------------------------------------

#include <stdio.h>
Main()

{

int x1, x2, y1, y2, m ;

printf ( "To find the slope of your line enter the following: \n" ) ;

printf ( "in the form (x,y) the first point \n" ) ;
scanf ( "%fd%fd" ,&x1 ,&y1 ) ;

printf ( "In the form (x,y) the second point \n" ) ;
scanf ( "%fd%fd" ,&x2 ,&y2 ) ;

m = (y1 - y2) / (x1 - x2);

getch ();

}

-----------------------------------------------------------------------------

Note: i am still new and this seems hard to me.

thanx,

Dave.

> Main()
it should be main (it's case sensitive)

> C:\DEV-C_~1\LIB\\libmingw32.a(main.o)(.text+0x8e): undefined reference to `WinMain@16'
This means you've tried to compile a windows (GUI) program, whereas you are actually creating a console (command line / DOS box) program.

Look through the project settings to see what type of program you are creating.

I have changed the source with regards to your sugestions try this and tell me what u think.

---------------------------------------------------------------------------------
#include <stdio.h>
#include <conio.h>
main()
{
int x1, y1, x2, y2, m ;

printf ( "To find the slope of your line enter the following: \n" ) ;

printf ( "The First set of points. eg. (x,y) \n" ) ;
scanf ( "%d%d" , &x1, y1 ) ;

printf ( "The Second set of points. eg. (x,y) \n" ) ;
scanf ( "%d%d" , &x2, y2 ) ;

m = ( y2 - y1 ) / (x2 - x1) ;

printf ( "The slope is %d \n" ,m ) ;

getch () ;
}
---------------------------------------------------------------------------------

thanks,

Dave.

what do you mean there is no return type for main() : should be void? i am new to this and i am confused by what u are saying please explaine.

Another void main'er
http://www.cprogramming.com/boardfaq.html#main