给一个不多于5位的正整数，要求:1.求出它是几位

Question

 

Answer 1

C3_2.c

#include <stdio.h>

int main() {
    int temp;
    int count = 0;
    int digits[5];
    int reversed_number = 0;
    int number;
    printf("请输入一个不多于5位的正整数：");
    scanf("%d", &number);
    // 计算位数
    temp = number;
    while (temp != 0) {
        count++;
        temp /= 10;
    }
    printf("这是一个%d位数。\n", count);
    // 存储各位数字并打印
    temp = number;
    while (temp != 0) {
        digits[count - 1] = temp % 10;
        printf("第%d位数字是：%d\n", count, digits[count - 1]);
        temp /= 10;
        count--;
    }
    // 逆序打印
    temp = number;
    while (temp != 0) {
        reversed_number = reversed_number * 10 + temp % 10;
        temp /= 10;
    }
    printf("逆序数: %d\n", reversed_number);
    return 0;
}