trim

liujianjun114

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

char *trim(char *_cp_ptr)
{
          int count;          
          char *cp_head;
          char *cp_mark;
          char *cp_tail;
          
          if ( NULL == _cp_ptr )
                    return(NULL);

//    "\0" (ASCII 0 (0x00))，空字节符
//    "\t" (ASCII 9 (0x09))，制表符
//    "\n" (ASCII 10 (0x0A))，换行符
//    "\r" (ASCII 13 (0x0D))，回车符
//    " " (ASCII 32 (0x20))，普通空格符
//    "\x0B" (ASCII 11 (0x0B))，垂直制表符

    cp_head = _cp_ptr;
    while ( ( *cp_head != '\0' ) && ( *cp_head == ' ' || *cp_head == '\n' || *cp_head == '\r' || *cp_head == '\v' || *cp_head == '\t' ) )
        cp_head++;
   
    for ( cp_tail = cp_mark = cp_head; *cp_mark != '\0'; cp_mark++ )
    {
        if ( *cp_mark == ' ' || *cp_mark == '\n' || *cp_mark == '\r' || *cp_mark == '\v' || *cp_mark == '\t' )
                  continue;
        
        cp_tail = cp_mark;
    }          
          count = (cp_tail - cp_head) + 1;
          
    memmove(_cp_ptr, cp_head, count);
    *(_cp_ptr + count) = '\0';
   
    return(_cp_ptr);
}

int main(int argc, char *argv[])
{
          char ca_string[] = " \n \n \r \v \t  123 456 789 \n \r  \v \t  ";
          
          printf("ca_string = %s", ca_string);
          printf("\n -- -- -- -- -- -- -- -- \n");
          printf("trim(ca_string) = %s", trim(ca_string));
          
    return(0);
}

bruceteen

啥意思？
是想show一下自己的烂代码，还是想让别人改错？