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.