function calls

**Draco** · 11-09-2003

MSVC++V6 isn't letting me pass the struct member foe into my function bulletsort. This is legal, isn't it? I've tried everything I can but nothing is right. The error messages I get are below the code. Does anyone know what I should do?

Code:

struct person {int x,	y,move,x_offset,y_offset,foe;};	

int bulletsort(bulleter.foe)
{
	int count;
	if(person bulleter.foe)
	{
		for(count=8;count<17;count++)
		{
			if(ammo[count].exists=TRUE) return count;
		}
		return -1;
	}
	else
	{
		for(count=0;count<8;count++)
		{
			if(ammo[count].exists=TRUE) return count;
		}
		return -1;
	}
}
END_OF_FUNCTION(bulletsort);

int fire_bullet(person gunner)
{
	int count;
	if((count=bulletsort(gunner.foe))==-1) return 1;
	ammo[count].x=gunner.x;
	ammo[count].y=gunner.y;
	ammo[count].direction=gunner.move%2;
	return 0;
}
END_OF_FUNCTION(fire_bullet);

C:\Program Files\Microsoft Visual Studio\MyProjects\ActionGameV2\ActionGameV2.cpp(20 ) : error C2065: 'bulleter' : undeclared identifier
C:\Program Files\Microsoft Visual Studio\MyProjects\ActionGameV2\ActionGameV2.cpp(20 ) : error C2228: left of '.foe' must have class/struct/union type
C:\Program Files\Microsoft Visual Studio\MyProjects\ActionGameV2\ActionGameV2.cpp(21 ) : error C2448: '<Unknown>' : function-style initializer appears to be a function definition
C:\Program Files\Microsoft Visual Studio\MyProjects\ActionGameV2\ActionGameV2.cpp(45 ) : error C2065: 'bulletsort' : undeclared identifier

**Shakti** · 11-09-2003

I *think* it should look like this (note that that is a big think, because im a C++ guy and not C but neway lol):

Code:

int bulletsort(person bulleter.foe)
{
	int count;
	if(bulleter.foe)
	{
		for(count=8;count<17;count++)
		{
			if(ammo[count].exists==TRUE)
                                                    return count;
		}
		return -1;
	}
	else
	{
		for(count=0;count<8;count++)
		{
			if(ammo[count].exists==TRUE)
                                                    return count;
		}
		return -1;
	}
}

**quzah** · 11-09-2003

Code:

int bulletsort(bulleter.foe)

Most definately wrong. You have two problems with this single line:
1) 'bulleter.foe' is a single variable in a structure, not a type of its own.
2) Even if it were a type, you don't have an actual variable name.

You want something like:

Code:

int bulletsort( struct person somevar );
{
    if( somevar.foe == SOMETHING_OR_OTHER )
        ...do stuff...
   ...more stuff...

The way you have it wouldn't be valid in C or C++.

On a side note, unless ammo is a global variable, it's not going to be available to said function, since you haven't declared it any place.

Quzah.

**Draco** · 11-09-2003

thanks, quzah. I thought what I did looked wrong but never saw or read anything on the topic. And yes, ammo is global.

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