help with c# program

tmh88

Hey guys I'm working on a C# program that gets the X and Y input from a user, and then determines which quadrant the x,y is in. It needs to determine the position of the point as a function of the two paramaters, x and y. Heres what I have so far. Can you guys give me some suggestions how to fix the errors? thanks

i realize that I need to call the function from below, but I cant think of any simple ways to do it.

and btw #include <stdio.h isnt showing up in the code down below for some reason, but its there, just trust me on it.

#include <stdio.h>


int main (void) {

double x,y;

printf("Enter the X value");
scanf("%lf", &x);

printf("Enter the y value");
scanf("%lf", &y);
return (0);
}


{
double x,y;

if (x==0 && y==0)
   printf("The point is on the origin");
else

if (x==0)
  printf("The point is on the X axis");
else

if (y==0)
   printf("The point is on the Y axis");

else

if (x>0 && y>0)
   printf("The point is in quadrant 1");

else

if (x<0 && y>0)
   printf("The point is in quadrant 2");

else

if (x<0 && y<0)
   printf("The point is in quadrant 3");

else

if (x>0 && y<0)
   printf("The point is in quadrant 4");

return (0);
}

when I compile it I get the error l
ab4.c:25: error: expected identifier or '(' before '{' token

shwaip

you need to name your function, so you can call it after you have the x,y inputs:

int aFunctionName (whatever your arguments are {it might be good to pass it x and y}) {
double x,y;

if (x==0 && y==0)
   printf("The point is on the origin");
else

if (x==0)
  printf("The point is on the X axis");
else

if (y==0)
   printf("The point is on the Y axis");

else

if (x>0 && y>0)
   printf("The point is in quadrant 1");

else

if (x<0 && y>0)
   printf("The point is in quadrant 2");

else

if (x<0 && y<0)
   printf("The point is in quadrant 3");

else

if (x>0 && y<0)
   printf("The point is in quadrant 4");

return (0);
}

tmh88

Ok i re-wrote it and it runs perfectly

#include <stdio.h>

double coordinate (double, double);
int main (void) {
double x,y;
	printf("Enter the X value\n");
	scanf("%lf", &x);
	printf("Enter the y value\n");
	scanf("%lf", &y);
	
	printf("%1.2f", coordinate (x, y));

return (0);
}

double coordinate (double x, double y) {
if (x == 0 && y == 0)
        printf("The point is on the origin.\n");
else
if (x == 0 && y > 0)
        printf("The point is on the positive y axis.\n");
else
if (x == 0 && y < 0)
        printf("The point is on the negative y axis.\n");
else
if (y == 0 && x > 0)
        printf("The point is on the positive x axis.\n");
else
if (y == 0 && x < 0)
        printf("The point is on the negative x axis.\n");
else
if (x > 0 && y > 0)
        printf("The point is in quadrant 1.\n");
else
if (x < 0 && y > 0)
        printf("The point is in quadrant 2.\n");
else
if (x < 0 && y < 0)
        printf("The point is in quadrant 3.\n");
else
if (x > 0 && y < 0)
        printf("The point is in quadrant 4.\n");
return (0);
}

shwaip

do you need to return anything? If not, why are you returning something?

tmh88

it prints out what quadrant or axis the points are on.

shwaip

right, but everytime you call the function, it returns the same (useless) value (0), regardless of what you pass it. Why bother to return something?

tmh88

idk, but it still works the way I want it to so im not gonna mess with it.

shwaip

I'd take points off if I were grading it. You know, if I were a TA.

tmh88

So, are you suggesting to get rid of printf() and replace that with return (coordinate) or something?

shwaip

I'm saying don't return anything.