题解 | #倒置字符串#

#include <stdio.h>
#include<assert.h>
#include<string.h>
void reverse(char* left,char* right)
{
    assert(left&&right);
    while(left<right)
    {
      char ret=*left;
      *left=*right;
      *right=ret;
       left++;
       right--;
    }
}
int main()
{
  char arr[101]={0};
  gets(arr);
  int len=strlen(arr);
reverse(arr,arr+len-1);
char *str=arr;
while(*str)
{
   char* start=str;
    while(*str!=' '&&*str!='\0')
    {
         str++;
    }
    reverse(start,str-1);
    if(*str!='\0')
       str++;
}
printf("%s\n",arr);

return 0;
}