parse a string 1

[cbeganesh]

Hello
I have a string in this format
lastname.firstname.middlename:
I want to parse these elements into separate strings
If i get any examples or sample code, It will be of great help

Thank You

 

[columb]

Try strtok - the following code is without any error checking

char *instring = "last.first.middle";
char *last, *first, *middle;

last = strtok ( instring, "." );
first = strtok ( NULL, "." );
middle = strtok ( NULL, "." );

as ever use man first!

Columb Healy

 

[cbeganesh]

im getting access violation error when i run that

 

[columb]

This code

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
 
main ()
 
{
 
char *instring = "last.first.middle";
char *last, *first, *middle;
 
last = strtok ( instring, "." );
first = strtok ( NULL, "." );
middle = strtok ( NULL, "." );
printf ( "Middle = %s\nLast = %s\nFirst = %s\n", middle, last, first ); 
}

compiles and runs as expected


Columb Healy

 

[cbeganesh]

Im still getting the error, Im running this on VMS
but when i change the instring to char instring[100]
i dont get the error

 

[Diancecht]

You will find the reason here:

http://cermics.enpc.fr/~ts/C/EXAMPLES/

Check strtok.c

Cheers,
Dian

 

[cbeganesh]

Thanks guys for help on this one, Appreciated

 

[butthead]

I got to do it the hard way

char array [3][25];
    
void separate_string (char *string, char c)
{
    int length = strlen (string);
    int x, y = 0;
    int z = 0;
    char buff1 [25];

    for (x = 0; x < length; x++)
    {
        if (string [x + 1] == NULL)
        {
            buff1 [z] =  string [x];
            buff1 [z + 1] =  NULL;

            if (strlen (buff1))                
                strcpy (array [y], buff1);
        }
        else if (string [x] != c)
        {
            buff1 [z] =  string [x];
            z++;
                        
            if (string [x + 1] == c)
            {
                buff1 [z] = NULL;
                z = 0;
                if (strlen (buff1))
                {
                    strcpy (array [y], buff1);
                    y++;
                }
            }
        }
    }
}

printf ("\s", array [0]);
printf ("\s", array [1]);
printf ("\s", array [2]);

TC

 

[DaveSinkula]

I might have done it like this.

#include <stdio.h>

int main(void)
{
   const char line[] = "last name.first name.middle name";
   char last[32], first[20], middle[12];
   if(sscanf(line, "%31[^.].%19[^.].%11[^.]", last, first, middle) == 3)
   {
      printf("first  = \"%s\"\n", first);
      printf("middle = \"%s\"\n", middle);
      printf("last   = \"%s\"\n", last);
   }
   return 0;
}

/* my output
first  = "first name"
middle = "middle name"
last   = "last name"
*/

 

[butthead]

we skinned that cat 3 different ways

TC

 

[ArkM]

Never use strtok in this context:

char* p = "string literal";
...strtok(p,...

String literals in C/C++ are constants but strtok modifies its argument.