strtok语法

语法：

    #include <cstring>
char *strtok( char *str1, const char *str2 );

strtok 函数返回str1中下一个标记(token)，而str2中包含分隔符来决定标记。如果没有发现标记strtok返回NULL。

为了将字符串转换成标记，第一次调用strtok应该将str1指向要标记的字符串。之后所有的调用应该将 str1 设置为 NULL。

例如：

     char str[] = "now # is the time for all # good men to come to the # aid of their country";
char delims[] = "#";
char *result = NULL;
result = strtok( str, delims );
while( result != NULL ) {
printf( "result is /"%s/"/n", result );
result = strtok( NULL, delims );
}

上面的代码将显示一下输出：

    result is "now "
result is " is the time for all "
result is " good men to come to the "
result is " aid of their country"