1 #include<stdio.h>
  2 #include<stdlib.h>
  3 
  4 int main()
  5 {
  6     char *str[] = {"I","am","from","shanghai",'\0'};
  7     char *tmp;
  8     int i = 0,j = 0,len = 0;
  9 
 10     while(*(str + i)!='\0')
 11     {
 12         i++;
 13         len++;
 14     }
 15     for(i = 0,j = len - 1;j > i;i++,j--)
 16     {
 17         tmp = *(str + i);
 18         *(str + i) = *(str + j);
 19         *(str + j) = tmp;
 20     }
 21     for(i = 0;i < len;i++)
 22     {
 23         printf("%s ",*(str + i));
 24     }
 25     printf("\n");
 26     return 0;
 27 }
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