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Hello!
I'm trying to read from files some lines?
I also use the strtok method to get words from each line!
I need to give warning if there is too many parameters(word) or too little
How i can do that ?
Without strtok? maybe some kind of command or something like that?
strtok() is certainly usable for this purpose. There are obviously other methods too [like writing your own parser function]. Without knowing more about what the input is supposed to look like it is impossible to answer "what is the best way".
--
Mats
If you are trying to count the number of words in each line try this:
1. read in each line into a buffer using fgets
2. use strtok on the buffer using a while loop and have a counter in the loop
I use the strtok Not for counting the wordsQuote:
Originally Posted by matsp
I use it because i need to take words from the line
But if the number of words in line don't feet
I need to show some warning!
so my question is : if there is a command that tell me the numbers of words in line
no - count them by yourselfQuote:
if there is a command that tell me the numbers of words in line
Not that I can immediately think of. But if you are parsing the line anyways to find the words in it, then you may just as well try to get as many as you expect to get and if that either fails [too few words] or you got something left over [too many words] print a relevant error message.
--
Mats
Thank'sQuote:
Originally Posted by vart
another question:
There is problems with the strcmp somtimes it's worke and sometimes Not and it's not only in my program also in my friends program
so someytimes i use the strncmp command and now it's work?
why it's happening?
One more question?
When I send 2 Dimensions array to a function
in the Debug mode it's show me that the function get 1 dimension array
But actually the function get 2 dimensions?
why it's happening(I use Visual Studio 2005)
strcmp always works; I would guess sometimes you use it correctly and sometimes you don't. It returns a negative value if the first argument comes first (ASCIIbetically), 0 if they agree, and a positive number if the second argument comes first.Quote:
Originally Posted by c9dw2rm8
I'm not very familiar with the VS debugger, so I'll hand that off.
in My program i need somtimes to find the word CHECKQuote:
Originally Posted by tabstop
and sometime CHECKMATE
maybe because both of them begin with the same sub string CHECK it's make problems?
Only if you don't compare correctly.Quote:
Originally Posted by c9dw2rm8
--
Mats
Quote:
Originally Posted by matsp
if you can help me and take a lookCode:
while (fgets(line,LINE_LENGTH,input)!=NULL){
command=strtok(line," \t\n\r");
if (command==NULL) continue; //empty line
if (strcmp(command,"NEW")==0){
tool=strtok(NULL," \t\n\r");
to=strtok(NULL," \t\n\r");
color=strtok(NULL," \t\n\r");
if (color==NULL || tool==NULL || to==NULL){
printMessage(output,WRONG_ARGUMENTS);
continue;
}
AddPiece(color,tool,to,output);
}//end NEW
else if (strcmp(command,"MOVE")==0){
from=strtok(NULL," \t\n\r");//from
to=strtok(NULL," \t\n\r");//to
if ((from==NULL)||(to==NULL)){
printMessage(output,WRONG_ARGUMENTS);
continue;
}
MoveTool(from,to,output);
}//end MOVE
else if(strcmp(command,"CHECKMATE")==0){
color=strtok(NULL," \t\n\r");
if (color==NULL){
printMessage(output,WRONG_ARGUMENTS);
continue; //end the current session of the loop
}
CheckCheckMate(color,dest);
}//end CHECKMATE
else if(strcmp(command,"CHECK")==0){
color=strtok(NULL," \t\n\r");
Result=CheckCheck(color,output);
if (color=NULL){
printMessage(output,WRONG_ARGUMENTS);
continue;
}
if (Result==0)//Not good Color
printMessage(output,NO_SUCH_COLOR);
if (Result==1)//CHECK
printMessage(output,CHECK);
if (Result==2 || Result==3)//NO_CHECK
printMessage(output,NO_CHECK);
}//end CHECK
else if (strcmp(command,"PRINT_BOARD")==0)
PrintBoard(output);
else if (strcmp(command,"EXIT")==0)
return;
else{
printMessage(output,WRONG_ARGUMENTS);
continue;
}
}//end While
Quote:
Originally Posted by c9dw2rm8
In other words, if you post code we can try to help you find errors, but:Quote:
Originally Posted by matsp
will return 0 if my_string_ptr is "check" and some negative number if it's "checkmate" whileCode:strcmp("check", my_string_ptr);
will return positive and 0, respectively.Code:strcmp("checkmate", my_string_ptr);
I'm a little unclear as to context, since I wouldn't expect that your chess program users would actually type "CHECK WHITE" or whatever -- or are you checking output of another chess program? -- but that's the way it's supposed to work. I notice that CheckCheckMate takes different arguments than everything else.Quote:
Originally Posted by c9dw2rm8
Thanks for the problem in the checkmate i wrote dest insted of output ans it's worked?Quote:
Originally Posted by tabstop
mmmmm.... intresting?
Thank's anyway
If you happen to get a hold of the "White book" the K&R C Programming Language book, section 1.5.4 example code (Word Counting) will perform what you need in terms of counting the number of words among other atributes. This is very similar to the 'wc' command on Unix.Quote:
Originally Posted by c9dw2rm8
The book is pretty much a must have, by the way.