Thread: Noob to programming need help with a project

Hello, well as the title states im pretty new to programming, and I need help with a project I was given in class..

Code:

//preprocessor directives
#define _CRT_SECURE_NO_DEPRECATE
#include<stdio.h>

void display (int skateBd, int longBd, int scooter, int ripStick, int bicycle);		//Funtion prototypes go here (minimum three user defined functions)
int MostInStock (int skateBd, int longBd, int scooter, int ripStick, int bicycle);
void restock (int skateBd, int longBd, int scooter, int ripStick, int bicycle);


int main ()
{
int skateBd;	//declare 5 variables for the quantities of units (skateboard, longboard, etc.)
int longBd;
int scooter;
int ripStick;
int bicycle;
int id,qty;

  skateBd =0;	//initialize all 5 variables to 0
  longBd =0;
  scooter =0;
  ripStick =0;
  bicycle =0;

  {
	FILE *myPtr;							//declare pointer to a file

	myPtr=fopen("records.txt","r");		//connect to the file

	fscanf(myPtr, "%d %d", &id, &qty);	//get first pair of numbers from the file
	
        
	while(id!=-9999)
    {
		printf("ID is %d, Qty is %d\n", id, qty);	//print each pair of numbers on the screen

		if (id==1)		//do the comparisons witht the id here (use if/ese or switch)
		{
			skateBd=skateBd+qty;
		}
		else if (id==2)
		{
			longBd=longBd+qty;
		}
		else if (id==3)
		{
			scooter=scooter+qty;
		}
		else if (id==4)
		{
			ripStick=ripStick+qty;
		}
		else if (id==5)
		{
			bicycle=bicycle+qty;
		}
		

	fscanf(myPtr, "%d %d", &id, &qty);	//get next pair of numbers from the file
    }
	
	fclose(myPtr);				//close the file
  }
	//call display function
	//call mostInStock function

	//use if/else or switch here for return id from mostInstock

	//call restock function
	return 0;
}  

//function definitions go here (minimum 3 user defined functions)

AS you can see I am not done with the bottem yet, only because when I run the program it triggers a Break. As I stated before I am new to this and have no idea whats wrong.

By now everyone is probly laughing at how easy this looks, but all I can ask is for some help.


Also my teacher gave me this and said to paste it where the source code is found so the file can be found easy.
I just saved it as "records.txt" on notepad and pasted it in the are where the source code was.

The records.txt file

PHP Code:

3 466
5 983
2 121
1 194
4 372
1 -193
5 -766
3 -458
4 -369
2 12
-9999 


Once again I am a noob and if im not doing any thing right as for posting up something im VERY SORRY.

You should check that fopen actually opened a file. If myPtr is NULL, then there's no point in trying to read from that file.

Be easy on me now, how might I go about doing that?

I'm hoping you can translate "if" into C. "If myPtr is NULL". (Remember that "is" is "==".)