include "pch.h"

include

include<math.h>

using namespace std;

int fanxushu(int number) {

int revx = 0;
while (number != 0) {
	revx *= 10;
	revx = revx + number % 10;
	number = number / 10;

}
return revx;

}

int main() {

int n;
cin >> n;
if (abs(n)>=101&&abs(n)<=999) {

	

	if (n > 0) {
		if (n%100==0) {
		
			return 0;
		}
		else if(n/100==0)
		{
			return 0;
		}
		else
		{
			int v = fanxushu(n);
			cout << v;
		}
		
	}
	else {
		int L = 0;
		L = -n;
		if (L % 100 == 0) {

			return 0;
		}
		else if (L / 100 == 0)
		{
			return 0;
		}
		else
		{
			int O = fanxushu(L);
			cout << O;
		}
	}
}

}

不要引用自己的头文件 #include "pch.h"