C split a char array into different variables

Question

In C how can I separate a char array by a delimiter  Or is it better to manipulate a string  What are some good C char manipulation functions

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This is how I do it   void SplitBufferToArray char  buffer  char   delim  char    Output         int partcount   0      Output partcount      buffer       char  ptr   buffer      while  ptr    0      check if the string is over         ptr   strstr ptr  delim           if  ptr    NULL                 ptr   0              Output partcount      ptr   strlen delim               ptr   ptr   strlen delim                        Output partcount      NULL

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Look at strtok    strtok   is not a re-entrant function   strtok r   is the re-entrant version of strtok    Here s an example program from the manual       include  lt stdio h gt      include  lt stdlib h gt      include  lt string h gt      int main int argc  char  argv                char  str1   str2   token   subtoken         char  saveptr1   saveptr2         int j          if  argc    4               fprintf stderr   Usage   s string delim subdelim n  argv 0               exit EXIT FAILURE                    for  j   1  str1   argv 1     j    str1   NULL               token   strtok r str1  argv 2    amp saveptr1              if  token    NULL                 break             printf   d   s n   j  token               for  str2   token    str2   NULL                   subtoken   strtok r str2  argv 3    amp saveptr2                  if  subtoken    NULL                     break                 printf   -- gt   s n   subtoken                                 exit EXIT SUCCESS          Sample run which operates on subtokens which was obtained from the previous token based on a different delimiter       a out hello word bye abc def ghi      1  hello word bye  -- gt  hello  -- gt  word  -- gt  bye 2  abc def ghi  -- gt  abc  -- gt  def  -- gt  ghi

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You could simply replace the separator characters by NULL characters  and store the address after the newly created NULL character in a new char  pointer   char  input    asdf qwer  char  parts 10   int partcount   0   parts partcount      input   char  ptr   input  while  ptr      check if the string is over     if  ptr                    ptr   0          parts partcount      ptr   1            ptr        Note that this code will of course not work if the input string contains more than 9 separator characters

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include lt string h gt   include lt stdio h gt  int main         char input 16     abc d       char  p      p   strtok input             if p            printf   s n   p             p   strtok NULL             if p             printf   s n   p       return 0      you can look this program  First you should use the  strtok input       input is the string you want to spilt Then you use the strtok NULL        If the return value is true  you can print the other group

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In addition  you can use sscanf for some very simple scenarios  for example when you know exactly how many parts the string has and what it consists of  You can also parse the arguments on the fly  Do not use it for user inputs because the function will not report conversion errors   Example   char text      1 22 300 4444 -5   int i1  i2  i3  i4  i5  sscanf text    d  d  d  d  d    amp i1   amp i2   amp i3   amp i4   amp i5   printf   d   d   d   d   d   i1  i2  i3  i4  i5     Output      1  22  300  4444  -5   For anything more advanced  strtok   and strtok r   are your best options  as mentioned in other answers

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I came up with this This seems to work best for me It converts a string of number and splits it into array of integer    void splitInput int arr    int sizeArr  char num          for int i   0  i  lt  sizeArr  i               We are subtracting 48 because the numbers in ASCII starts at 48          arr i     int num i  - 48

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One option is strtok  example   char name 20     pretend name is set to the value  My name    You want to split it at the space between the two words  split strtok name        while split    NULL        word split      split strtok NULL

[c] C split a char array into different variables

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