字符串问题 （C语言描述,简洁）

解题思路:

                    用循环来倒叙遍历输出单个字符

注意事项:
                    注意字符串长度要减去一个
参考代码:

                        #include<stdio.h>
                        #include<string.h>
                        int main()
                        {
                              char ch[81];
                               gets(ch);
                               for(int i=strlen(ch)-1;i>=0;i--)
                              printf("%c",ch[i]);
                        }