SEPERATING A STRING INTO TOKENS

There are many ways to split a line of text up into tokens. One simple example is to split up the words in a sentence. The following code shows how to do this using the strtok() function. Just beware that this function alters the original string, so if you need to use it again, make a copy before calling strtok().

#include 
#include 

#define DELIM   " "
#define MAXWORD 80
#define MAXLEN  20

int main(void)
{
 char  words[MAXWORD][MAXLEN];
 char  buff[BUFSIZ];
 int   ntokens = 0;
 int   i;

 printf("Enter a string: ");
 fflush(stdout);

 if (fgets(buff, sizeof buff, stdin) != NULL)
 {
   char  *sep = strtok(buff, DELIM);

   while (sep != NULL)
   {
     strcpy(words[ntokens++], sep);
     sep = strtok(NULL, DELIM);
   }
 }

 for (i = 0; i < ntokens; i++)    
{     
 puts(words[i]);   
}    
 return(0); 
}  
/** Output :   Enter a string: this is a long line of text
this   
is   
a   
long   
line   
of   
text  **/