写一个C++程序，求一个整数的反序

#include <stdio.h>
int main() {
int num, reversed_num = 0;
printf("请输入一个整数：");
scanf("%d", &num);
while (num != 0) {
reversed_num = reversed_num * 10 + num % 10;
num /= 10;
}
printf("反序数为：%d", reversed_num);
return 0;
}