C Program To Split a String Into Words

In this tutorial, we are going to see how to write a C program to split a string into words using strtok() function. To split a string, we need a delimiter – a delimiter is a character that will be used to split the string.

Let’s say we have the following string and we want to extract each word from the string.

char str[] = "Welcome to StackHowTo best online learning platform";

Notice that the words are separated by a space. So the space will be our delimiter in this case.

char delimiter[] = " ";

strtok() function accepts two parameters – the first is the string to be split, the second is the delimiter. The strtok function returns a pointer to the character of the next word.

char *p = strtok(str, delimiter);

 
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C Program To Split a String Into Words

#include <stdio.h>
#include <string.h>

int main()
{
  char str[] = "Welcome to StackHowTo best online learning platform";
  int len = strlen(str);
  char delimiter[] = " ";

  char *p = strtok(str, delimiter);

  while(p != NULL)
  {
    printf("'%s'\n", p);
    p = strtok(NULL, delimiter);
  }
  printf("\n");
  return 0;
}

Output:

'Welcome'
'to'
'StackHowTo'
'best'
'online'
'learning'
'platform'

 
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