题解 | #牛牛逆序输出#

#include <stdio.h>

int main() {
    int n;
    scanf("%d", &n);
    
    int count = 0;
    int num = n;
        while (num) {   //首先计算出这个整数有多少位
        num = num/10;
        count++;
    }
    int arr[count];

    for (int i = 0; i < count; i++) {
        arr[i] = n%10;      //把整数取余放入数组中
        n = n/10; 
        printf("%d",arr[i]);  //因为逆序输出，取余正好是逆序输出
    }
  
    return 0;
}