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Mar 4th, 2005, 3:56 PM
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Join Date: Mar 2005
Posts: 5
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Linked List Part 2
Hi,
For the second part of my code (First Part being titled Linked List and Array of POinters) I need to fill in the Linked List with values for the line_used from a file. The file has the following format: Array size: 17 x 17 logic blocks. Routing: Net 0 (i_63_) SOURCE (18,1) Pad: 0 OPIN (18,1) Pad: 0 CHANY (17,1) Track: 2 CHANX (17,1) Track: 3 IPIN (17,1) Pin: 2 SINK (17,1) Class: 0 CHANX (17,1) Track: 2 CHANY (16,2) Track: 4 IPIN (16,2) Pin: 3 SINK (16,2) Class: 0 Hence I need to read the Channel X or Y and the coordinates and the corresponding track number. Depending on the Channel (X or Y ) and the coordinates I have to fill up the linked list. The logic is illlustrated in my code but when I run the program on VC++ I get an error message that the exe file has encountered an error. When I try to debug it says that it cannot evaluate the line_used expression and the temp=temp->nextptr expression. Also further I get the following errors on debugging Loaded 'C:\WINDOWS\system32\ntdll.dll', no matching symbolic information found. Loaded 'C:\WINDOWS\system32\kernel32.dll', no matching symbolic information found. Loaded 'C:\WINDOWS\system32\version.dll', no matching symbolic information found. Loaded 'C:\WINDOWS\system32\msvcrt.dll', no matching symbolic information found. Loaded 'C:\WINDOWS\system32\advapi32.dll', no matching symbolic information found. Loaded 'C:\WINDOWS\system32\rpcrt4.dll', no matching symbolic information found. Loaded 'C:\WINDOWS\system32\user32.dll', no matching symbolic information found. Loaded 'C:\WINDOWS\system32\gdi32.dll', no matching symbolic information found. Loaded 'C:\WINDOWS\system32\shlwapi.dll', no matching symbolic information found. Loaded 'C:\WINDOWS\system32\apphelp.dll', no matching symbolic information found. The thread 0x7E8 has exited with code 0 (0x0). The thread 0xF88 has exited with code -1073741819 (0xC0000005). On GCC I simply get a Segmentation Fault. I am again all confused where to try looking for tthe problem. I tried printing out the tracknumber and coordinates also. They do print if I comment the part from **HERE** to **HERE** I am attaching the code below:
#include<stdio.h>
#include<stdlib.h.>
struct switch_matrix
{
int pin_no;
int line_used;
struct switch_matrix *nextptr;
};
struct switch_block
{
struct switch_matrix *Array[40];
}Layout[18][18];
typedef struct switch_matrix SWITCH;
void build_univ_switch (struct switch_block *X);
int main()
{
int x1=0,x2=0,y1=0,y2=0,trackno1=0,trackno2=0,m,n;
FILE *fp;
SWITCH *temp;
char ch;
fp=fopen("e64.r","r");
while(!feof(fp))
{
**HERE**
if (x1==x2)
{
if (y1==y2)
{
temp=Layout[17-y1][x1].Array[19+trackno2];
temp=temp->nextptr;
temp->line_used=1;
temp=Layout[17-y1][x1].Array[19-trackno1];
temp=temp->nextptr;
temp=temp->nextptr;
temp->line_used=1;
}
else
{
if (y2==y1+1)
{
temp=Layout[17-y1][x1].Array[19-trackno1];
temp->line_used=1;
temp=Layout[17-y1][x1].Array[9-trackno2];
temp=temp->nextptr;
temp->line_used=1;
}
else
{
if (y2 > y1+1)
{
temp=Layout[17-(y2-1)][x1].Array[19+trackno2];
temp->line_used=1;
temp=Layout[17-(y2-1)][x1].Array[9-trackno2];
temp=temp->nextptr;
temp=temp->nextptr;
temp->line_used=1;
}
}
}
}
else
{
if (y1==y2)
{
if (x1==x2+1)
{
temp=Layout[17-y2][x2].Array[19+trackno2];
temp=temp->nextptr;
temp=temp->nextptr;
temp=temp->nextptr;
temp->line_used=1;
temp=Layout[17-y2][x2].Array[29+trackno1];
temp=temp->nextptr;
temp=temp->nextptr;
temp->line_used=1;
}
else
{
if (x1 > x2+1)
{
temp=Layout[17-y1][x1-1].Array[19-trackno1];
temp=temp->nextptr;
temp=temp->nextptr;
temp=temp->nextptr;
temp->line_used=1;
temp=Layout[17-y1][x1-1].Array[29+trackno1];
temp=temp->nextptr;
temp->line_used=1;
}
}
}
else
{
if (y2==y1+1)
{
temp=Layout[17-y1][x2].Array[9-trackno2];
temp=temp->nextptr;
temp=temp->nextptr;
temp=temp->nextptr;
temp->line_used=1;
temp=Layout[17-y1][x2].Array[29+trackno1];
temp->line_used=1;
}
}
} **HERE**
ch=fgetc(fp);
if (ch=='S')
{
x1 = 0;
y1 = 0;
x2 = 0;
y2 = 0;
ch=fgetc(fp);
if(ch=='C')
{
ch=fgetc(fp);
if(ch=='H')
{
ch=fgetc(fp);
if(ch=='A')
{
ch=fgetc(fp);
if(ch=='N')
{
ch=fgetc(fp);
if(ch=='X')
{
ch=fgetc(fp);//the blank
//ch=fgetc(fp);//the colon
ch=fgetc(fp);//the (
fscanf(fp,"%d",&x1);
printf("%d\n",x1);
ch=fgetc(fp);//the ,
fscanf(fp,"%d",&y1);
printf("%d\n",y1);
for(m=0;m<10;m++)//no of charac till u reach track no
ch=fgetc(fp);
fscanf(fp,"%d",&trackno1);
printf("go\n");
printf("%d\n",trackno1);
//store these in the linked list
}
else if (ch=='Y')
{
ch=fgetc(fp);//the blank
//ch=fgetc(fp);//the colon
ch=fgetc(fp);//the (
fscanf(fp,"%d",&x2);
printf("%d\n",x2);
ch=fgetc(fp);//the ,
fscanf(fp,"%d",&y2);
printf("%d\n",y2);
for(n=0;n<10;n++)//no of charac till u reach track no
ch=fgetc(fp);
fscanf(fp,"%d",&trackno2);
printf("%d\n",trackno2);
//store these in the linked list
}
}
}
}
}
}
}
fclose(fp);
return 0;
}
void build_univ_switch(struct switch_block *X)
{
SWITCH *head;
SWITCH *currentptr;
int i, j;
for (i = 0; i<40; i++)
{
/*BUILDS LINKED LIST*/
head = NULL;
for (j = 1; j<=4; j++)
{
currentptr = (SWITCH *) malloc (sizeof (SWITCH));
currentptr->line_used = 0;
currentptr->nextptr = head;
head = currentptr;
}
//currentptr = head;
X->Array[i] = head;
}
}I am open to any help as I can get regarding this. |
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