学步园

实现控制台输入一行字符串，并反向输出

#include <stdio.h>
#include <string.h>
int main(void)
{
    static char arr[255];
    int i = 0;
    char ch;
    scanf("%c",&ch);
    while(ch != '\n')
    {
        arr[i] = ch;
        scanf("%c",&ch);
        i++;
    }
    while(i-- > 0)
        printf("%c",arr[i]);
    return 0;
}