include <stdio.h>
#include <stdlib.h>
#include <math.h>
int main()
{
int x,y,w,z,f1,f2;
printf("enter four numbers");
scanf("%d%d%d%d",x,y,w,z);
f1=x-y-w-z;
f2=x-y-(w+z);
printf("numbers f1 is %d and f2 is %d",f1,f2);
return 0;
}

 

You´ve been here a while, so you might have noticed we got here what is called code tag, which lets you post the code right here.

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

int main()
{
   int x,y,w,z,f1,f2;
   printf("enter four numbers");
   scanf("%d%d%d%d",x,y,w,z);
   f1=x-y-w-z;
   f2=x-y-(w+z);
   printf("numbers f1 is %d and  f2 is %d",f1,f2);

    return 0;
}

Look here, see where you problem is? http://www.cplusplus.com/reference/clibrary/cstdio/scanf/
That should help you with the first one, the second is that you should have spaces between the %d in the scanf function, else it won't recognize the rest of the numbers.

 

in addition to comment by kubeek, your variables need & in front of each variable in SCANF instruction. this is one of the classic pitfalls of programming in c.

 

Since when?

The & operator is only valid in C++ when using references.

I doubt that.

http://www.cplusplus.com/reference/clibrary/cstdio/scanf/

Do you use C at all? Then you have to use & actually, at least when you write programs dealing with pointers.

 

Not to mention not giving proper error messages.

I doubt you would be getting the message "that the program stop working".

I think panic mode has it. Scanf needs a pointer to a variable not the variable itself. & get the address of the variable i.e. it's pointer.

 

I doubt that.

http://www.cplusplus.com/reference/clibrary/cstdio/scanf/

Do you use C at all? Then you have to use & actually, at least when you write programs dealing with pointers.

Had a brain freeze for a minute. Yikes I didn't even get a chance to correct my statement.

 

Had a brain freeze for a minute. Yikes I didn't even get a chance to correct my statement.

NP (no problem). I'm not too bright myself with C++, even if I try to improve (reading a lot of websites and also a few paper books).

 

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
int main()
{
   int x,y,w,z,f1,f2;
   printf("enter four numbers");
   scanf("%d%d%d%d",x,y,w,z);
   f1=x-y-w-z;
   f2=x-y-(w+z);
   printf("numbers f1 is %d and  f2 is %d",f1,f2);
    return 0;
}

 

You still need to make it

   scanf("%d%d%d%d", &x, &y, &w, &z);

Personally I think spaces between the list elements makes it easier to read, but you don't have to.