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please help me in the file optimization

anup_don2000 Posted: Thu Jul 17, 2003 9:27 am

Joined: 17 Jul 2003

Posts: 1

please help me in the file optimization

Hi experts,
Iam writing a file reading and manipulation program using
c. What I have to do, is to read the keyword and valued froma file,
delimetered with equal sign. Then I want to perform a string
comparison of the keywords, adn then store the value of the
corresponding keyword in to a structure. I will write program as
belows...

int writestruct(char* keyword, char* keyvalue)
{

int i;
char *table []={"ID","NODE","UID","GID"..........81 items}
for (i=0; ; i++) {
if(!strcmp(keyword, table))
break;
}
clrscr();
switch (i)
{
case 0 : strcpy(user.ID, keyvalue);break;
case 1 : strcpy(user.NODE, keyvalue);break;
case 2 : strcpy(user.UID,keyvalue);break;...............

}

The above function to write the corresponding vlaue to the keyword
into structure user , which is previously defined.

***********************************************************************
Now the below function to return the value fro structure at a later time
************************************************************************
char* returnstruct(char* keyword)
{
char* szReturnstruct=malloc(100*sizeof(char));
int i;
char *table []={"ID","NODE","UID","GID"....81 items}

for (i=0; ; i++) {
if(!strcmp(keyword, table))
break;
}
clrscr();
switch (i)
{
case 0 : strcpy(szReturnstruct,user.ID);break;
case 1 : strcpy(szReturnstruct,user.NODE);break;
case 2 : strcpy(szReturnstruct,user.UID);break;
case 3 : strcpy(szReturnstruct,user.GID);break;
}

Now the real problem is that in the for loop( used to return int value
for case structure). Its taking a lot of cpu time and memory.......
Can anyone devise another method ( hash table search and sorting
algorithm implementation is preferred). to get rid of this performance
criteria........Sample code will be greatly appreciated...

Thanks in advance

MS

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