can't close a file??

Michelle <mi************@hotmail.com> wrote in
news:3F************@hotmail.com:

Hi, i attach my code here:

////////////////////////

void getNewDeploy(DeployType *deploy ) {

DeployRecType de;
AInTablePtr newptr;

int MAX_LINE_LENGTH=300;

char line[MAX_LINE_LENGTH];

char delim[] = ":";
char *tempagent, *tempstring;
char *tmpstr;

FILE *fpd;
if((fpd = fopen(DEPLOY_FILE, "r")) == NULL){
printf("\n file couldn't be found.");
exit(1);
}
int i;
Hey! You can't do this in C. You have defined a new variable without an
enclosing block -- syntax error unless this is really C++ in disguise.
for(i=0;i<MAXNODES;i++){

sprintf(de.node, "%d", i+1);
tmpstr = de.node;
newptr = NULL;

while (fgets(line, MAX_LINE_LENGTH, fpd)!= NULL){

if( strstr(line, delim) !=NULL ){
tempagent=strtok(line, delim);
tempstring=strtok(NULL,delim);

if( strstr(tempstring, tmpstr) != NULL ){
addtotable(&newptr, tempagent); ;
}
}
}

de.agents = newptr;

(*deploy)[i]= de;

fseek(fpd,0,SEEK_SET);
}
if( fclose(fpd) != 0 )

printf( "Can't close file!" );

}

////////////////////////////////////////////////////////////
All are fine until it goes to if(fclose(fpd)!=0), where a seg fault
appears and it even doesn't print out "Can't close file!"

Well I can't see it. Can you load up DDD, Insight, or gdb and see what
happens to the value of 'fpd' thoughout the program? I can only guess that
the fpd pointer is getting corrupted and you are attempting to close a
non-file or some other file you aren't allowed to.

--
- Mark ->
--

Nov 13 '05 #8

Michelle <mi************@hotmail.com> wrote:

<code snipped>

I guess there must be something wrong on pointers. however, i really
have no idea where the bug is...

Michelle,

what looks DeployRecTyp like?
What looks AInTablePtr like?
What does addtotable() do?
Returns it a value? If so, why didn't you check it?
Why do you rewind the file every time the for loop executes?

The problem is that you did not post a compilable code sample. And if
you want to post one, cut it down to a bare minimum - most likely you
will find the error yourself when doing so (and when you are at it,
apply some consistent indentation on your code :-) ).

This is my tip for you:
- Start commenting out chunks of code.
- Compile and test
- When the error disappears, start putting in chunks of code again.

This way you should be able to locate the error.
Using a debugger may also be helpful... ;)

Regards

Irrwahn
--
Great minds run in great circles.

Nov 13 '05 #9

Michelle <mi************@hotmail.com> wrote in
news:3F************@hotmail.com:

Hi, i attach my code here:

////////////////////////

void getNewDeploy(DeployType *deploy ) {

DeployRecType de;
AInTablePtr newptr;

int MAX_LINE_LENGTH=300;

char line[MAX_LINE_LENGTH];

char delim[] = ":";
char *tempagent, *tempstring;
char *tmpstr;

FILE *fpd;
if((fpd = fopen(DEPLOY_FILE, "r")) == NULL){
printf("\n file couldn't be found.");
exit(1);
}
int i;
Hey! You can't do this in C. You have defined a new variable without an
enclosing block -- syntax error unless this is really C++ in disguise.
for(i=0;i<MAXNODES;i++){

sprintf(de.node, "%d", i+1);
tmpstr = de.node;
newptr = NULL;

while (fgets(line, MAX_LINE_LENGTH, fpd)!= NULL){

if( strstr(line, delim) !=NULL ){
tempagent=strtok(line, delim);
tempstring=strtok(NULL,delim);

if( strstr(tempstring, tmpstr) != NULL ){
addtotable(&newptr, tempagent); ;
}
}
}

de.agents = newptr;

(*deploy)[i]= de;

fseek(fpd,0,SEEK_SET);
}
if( fclose(fpd) != 0 )

printf( "Can't close file!" );

}

////////////////////////////////////////////////////////////
All are fine until it goes to if(fclose(fpd)!=0), where a seg fault
appears and it even doesn't print out "Can't close file!"

Nov 13 '05 #10

Michelle <mi************@hotmail.com> wrote:

<code snipped>

I guess there must be something wrong on pointers. however, i really
have no idea where the bug is...

Nov 13 '05 #11

"Mark A. Odell" <no****@embeddedfw.com> wrote:

Michelle <mi************@hotmail.com> wrote:
void getNewDeploy(DeployType *deploy ) {
<SNIP>
int i;

Hey! You can't do this in C. You have defined a new variable without an
enclosing block -- syntax error unless this is really C++ in disguise.

No problem, as it is enclosed in a block. It's just the bad indentation.
:)

<SNIP>

}

Irrwahn
--
Great minds run in great circles.

Nov 13 '05 #12

"Mark A. Odell" <no****@embeddedfw.com> wrote:

Michelle <mi************@hotmail.com> wrote:
void getNewDeploy(DeployType *deploy ) {
<SNIP>
int i;

Hey! You can't do this in C. You have defined a new variable without an
enclosing block -- syntax error unless this is really C++ in disguise.

No problem, as it is enclosed in a block. It's just the bad indentation.
:)

<SNIP>

}

Irrwahn
--
Great minds run in great circles.

Nov 13 '05 #13

Irrwahn Grausewitz <ir*****************@freenet.de> wrote in
news:7d********************************@4ax.com:

void getNewDeploy(DeployType *deploy ) {
<SNIP>
int i;

Hey! You can't do this in C. You have defined a new variable without an
enclosing block -- syntax error unless this is really C++ in disguise.

No problem, as it is enclosed in a block. It's just the bad indentation.

No, it isn't, in C you have to have a '{' before any variable definitions
without *any* run-time code between the '{' and the definition. E.g.

int main(void)
{
int idx; /* ok */

idx = 12;

char *pFoo; /* syntax error */

{
double fault; /* ok */

fault = 3.141592;

long boat; /* syntax error */
}

return 0;
}
Get the picture?
--
- Mark ->
--

Nov 13 '05 #14

Irrwahn Grausewitz <ir*****************@freenet.de> wrote in
news:7d********************************@4ax.com:

void getNewDeploy(DeployType *deploy ) {
<SNIP>
int i;

Hey! You can't do this in C. You have defined a new variable without an
enclosing block -- syntax error unless this is really C++ in disguise.

No problem, as it is enclosed in a block. It's just the bad indentation.

Nov 13 '05 #15

"Mark A. Odell" <no****@embeddedfw.com> wrote:

Irrwahn Grausewitz <ir*****************@freenet.de> wrote in
news:7d********************************@4ax.com :
void getNewDeploy(DeployType *deploy ) {

<SNIP>

int i;

Hey! You can't do this in C. You have defined a new variable without an
enclosing block -- syntax error unless this is really C++ in disguise.

No problem, as it is enclosed in a block. It's just the bad indentation.

No, it isn't, in C you have to have a '{' before any variable definitions
without *any* run-time code between the '{' and the definition. E.g.

int main(void)
{
int idx; /* ok */

idx = 12;

char *pFoo; /* syntax error */

{
double fault; /* ok */

fault = 3.141592;

long boat; /* syntax error */
}

return 0;
}

Get the picture?

True for C89, but AFAIK the above example is perfectly valid in C99!

Regards

Irrwahn
--
Great minds run in great circles.

Nov 13 '05 #16

how to close a child window?

"Mark A. Odell" <no****@embeddedfw.com> wrote:

Irrwahn Grausewitz <ir*****************@freenet.de> wrote in
news:7d********************************@4ax.com :
void getNewDeploy(DeployType *deploy ) {

<SNIP>

int i;

Hey! You can't do this in C. You have defined a new variable without an
enclosing block -- syntax error unless this is really C++ in disguise.

No problem, as it is enclosed in a block. It's just the bad indentation.

No, it isn't, in C you have to have a '{' before any variable definitions
without *any* run-time code between the '{' and the definition. E.g.

int main(void)
{
int idx; /* ok */

idx = 12;

char *pFoo; /* syntax error */

{
double fault; /* ok */

fault = 3.141592;

long boat; /* syntax error */
}

return 0;
}

Get the picture?

True for C89, but AFAIK the above example is perfectly valid in C99!

Regards

Irrwahn
--
Great minds run in great circles.

Nov 13 '05 #17

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