[编程入门]数字的处理与判断-题解(C语言代码)

# include <stdio.h>
# include <math.h>
int score, score_ = 0,i = 0,num,t;
double n;
scanf_s("%d", &score);
t = score;//防止原值变动
while (score)
{
    num = score % 10;
    score /= 10;
    i += 1;//个数累加
    score_ = score_ * 10 + num;//数值反写
}
printf("%d\n", i);//累加值
for (n = i; n--; n < 0)
{
    num = t / pow(10, n);
    t = t - num *pow(10, n);
    printf("%d ", num);
}//按顺序输出
printf("\n%d", score_);//反写值
return 0;