reading files

Alright, i've got a problem! my program reads a text file that has x and y co-ordinates for a number of points on a graph, i can read the file ok, but need to find the max and min values for x and y thats where it goes wrong!
this is what i'e got:

Code:

void getPoints(void)
{

	char buf[100];
	int length =0;
	int a;
	int b;
	int v=0;
	int i =0;

FILE *stream;
	if ((stream = fopen("Points.txt","r")) == NULL)
	{
	  fprintf(stderr,"Error opening file.");
	  exit(1);

                 }

                 while(!feof(stream))
	{
                  fgets(buf,30,stream);
                  if (sscanf(buf,"%d %d", &a,&b))
		{	
	                       pointX[i] = a;
		       pointY[i] = b;
		       i++;
                                 }
                   }
     Max_X = pointX[0];
     Min_X = pointX[0];
     Min_Y = pointY[0];
     Max_Y = pointY[0];

    for(v=2;v=35266;v++)
  	{
	if(Max_X < pointX[v] ) Max_X = pointX[v];
	if(Min_X > pointX[v] ) Min_X = pointX[v];
	if(Max_Y < pointY[v] ) Max_Y = pointY[v];
	if(Min_Y > pointY[v] ) Min_Y = pointY[v];
		
  		}

	}

i cann't get it to scan through all the coordinates correctly. any help appreciated!

It seems ok. How do you declare pointX and pointY? Perhaps your indexes are wrong (an array with n elements range from 0 to n-1)?

declared like this:

Code:

int pointX[36000];
int pointY[36000];
int Max_X,Min_X,Max_Y,Min_Y;

when i compile the max values have some random number in them and te min values are always 0,

As always, the error is right in front of the nose .

Code:

for(v = 2; v = 35266; v++)

Should be

Code:

for(v = 2; v < 35266; v++)

(Why start at 2? That's the third element)

If that wasn't the problem, perhaps you're compiling in a 16-bit compiler? Integers then range from ~ -32000 to +32000, making it impossible to address 35266.