Detailed explanation of the usage of strtok function

The strtok function is used to decompose a string into a set of strings. The declaration of the strtok function is "char *strtok(char *str, const char *delim)", where the parameter str indicates that it is to be decomposed into a set of small strings. String of strings.

C library function - strtok()

Description

C library function char *strtok (char *str, const char *delim) Decomposes the string str into a set of strings, and delim is the delimiter.

Declaration

The following is the declaration of the strtok() function.

char *strtok(char *str, const char *delim)

Parameters

str -- A string to be broken into a set of smaller strings.

delim -- C string containing delimiters.

Return value

This function returns the first substring that is decomposed, or a null pointer if there is no retrievable string.

Example

The following example demonstrates the usage of strtok() function.

Example

#include <string.h>
#include <stdio.h>
 
int main () {
   char str[80] = "This is - www.runoob.com - website";
   const char s[2] = "-";
   char *token;
   
   /* 获取第一个子字符串 */
   token = strtok(str, s);
   
   /* 继续获取其他的子字符串 */
   while( token != NULL ) {
      printf( "%s\n", token );
    
      token = strtok(NULL, s);
   }
   
   return(0);
}

Let us compile and run the above program, which will produce the following results:

This is 
 www.runoob.com 
 website

Recommended: "C Language Tutorial"

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