Linux strsep() 用法

strsep()，作为strtok的升级版，是一个很有用的字符串处理函数

man strsep:

#include <string.h>  

     char*strsep(char **stringp, const char *delim);

Be cautious when using this function. If you do use it, note that:  

This function modifies its first argument.  

This function cannot be used on constant strings.  

The identity of the delimiting character is lost.

#include <stdio.h> 
#include <string.h>
int main(void)
{   
    char s[] = "hello world!";
    char *p = s; 
    char *d = " ";  
    printf("%s\n", strsep(&p, d));    
    printf("%s\n", p);  
    return 0;
}
函数打印如下：helloworld!