Thread: Finding lowest value

hello guys and gals.

I am taking a data file created by the program in another function which looks like this:

1 38 27
7 24 23
38 12 15
23 14 9
27 18 8
11 9 29
3 24 40
34 44 2
34 45 27
46 3 25
19 45 47
26 25 37
41 26 28
2 16 44
3 49 31
26 25 42
33 14 8
1 5 11
19 47 36
4 4 7
21 25 5
34 19 14
29 14 1
46 45 21
42 26 2
26 23 35
5 47 46
33 3 12
21 38 9
35 38 16
45 41 44
38 7 32
13 1 8
3 34 34
37 43 19
17 31 19
31 37 25
38 36 8
49 49 29
18 44 42
13 12 29
49 16 47
36 18 28
37 26 8
32 29 49
4 42 21
31 21 7
44 42 28
14 14 13
22 21 24

These are all x y and z components of aircraft which the program creates in an early function (yes I did get it to work). Then I used a another function which looks like

Code:

 /*this is the function that will print to the distout.out file   */
    void FunctionDistout(FILE *Fplanes, FILE *Fdistout)
   {
      int aXaxis[50][3];
      int i = 0;
      int j = 0;
   	
   	
      for(i=0; i<50; i++)
      {
         for(j=0; j<3; j++)
         {
            fscanf(Fplanes, "%d, %d %d", &aXaxis[i][0], &aXaxis[i][1], &aXaxis[i][2]);
         }
      }
   		
      for(j=0; j<50; j++)
      {
         if(sqrt(aXaxis[j][0]*aXaxis[j][0]+aXaxis[j][1]*aXaxis[j][1]+aXaxis[j][2]*aXaxis[j][2]) < 55)
         {
            fprintf(Fdistout, "WARNING!!! Aircraft at %d %d %d is %3.2f KM away \n",
               	aXaxis[j][0], aXaxis[j][1], aXaxis[j][2],
               	sqrt(aXaxis[j][0]*aXaxis[j][0]+aXaxis[j][1]*aXaxis[j][1]+aXaxis[j][2]*aXaxis[j][2]));
         }
      }
   		
   		
   }

this function calculates all the aircrafts distances and writes them to a file. This works fine. But I created another function which will print to the screan the closet aircraft. How do I do this? Here are two of the many attempts at it: What have i done wrong?:

{
int aXaxis[50][3];
int i = 0;
int j = 0;
int l;
float u = 90;


for(i=0; i<50; i++)
{
for(j=0; j<3; j++)
{
fscanf(Fplanes, "%d, %d %d", &aXaxis[i][0], &aXaxis[i][1], &aXaxis[i][2]);
}
}

if(u > sqrt(aXaxis[j][0]*aXaxis[j][0]+aXaxis[j][1]*aXaxis[j][1]+aXaxis[j][2]*aXaxis[j][2]))
{
for(l=0; l<50; l++)
{
u = (sqrt(aXaxis[l][0]*aXaxis[l][0]+aXaxis[l][1]*aXaxis[l][1]+aXaxis[l][2]*aXaxis[l][2]));
}

}

printf("Nearest aircraft at %d %d %d: %f KM away.",
aXaxis[l][0], aXaxis[l][1], aXaxis[l][2], u);

}









void FunctionPrintSound(FILE *Fplanes)
{
int aXaxis[50][3];
int p = 0;
int q = 0;
int j = 0;
float u = 90;

for(p=0; p<50; p++)
{
fscanf(Fplanes, "%d, %d %d", &aXaxis[p][0], &aXaxis[p][1], &aXaxis[p][2]);
for(q=0; q<3; q++)
{
fscanf(Fplanes, "%d, %d %d", &aXaxis[q][0], &aXaxis[q][1], &aXaxis[q][2]);
}
}
for(j=0; j<50; j++)
{
if(u > sqrt(aXaxis[j][0]*aXaxis[j][0]+aXaxis[j][1]*aXaxis[j][1]+aXaxis[j][2]*aXaxis[j][2]))
{
u = (sqrt(aXaxis[j][0]*aXaxis[j][0]+aXaxis[j][1]*aXaxis[j][1]+aXaxis[j][2]*aXaxis[j][2]));
{
printf("Nearest aircraft at %d %d %d: %3.2f KM away.",
aXaxis[j][0], aXaxis[j][1], aXaxis[j][2], u);
}

}

}
}

Originally Posted by sloopy

btw Both of these functions work, but do not return the correct results

They probably hurt themselves trying to read unindented code. On an aside, I don't consider 'do not return the correct results' to be code that 'works'.

[edit]
Eh...alright, but this is the last time I read your code until you learn how to indent.

Code:

 for(i=0; i<50; i++)
{
for(j=0; j<3; j++)
{
fscanf(Fplanes, "%d, %d %d", &aXaxis[i][0], &aXaxis[i][1], &aXaxis[i][2]);
}
}

Why do you have a loop that reads 3 lines, each of which read 3 items, inside a loop that executes 50 times. Do you have 150 lines in your file? Oh, also, stop using & there. You don't need to with arrays of basic types.
[/edit]

Quzah.