题目描述
blablabla
样例
blablabla
C++ 代码
#include <bits/stdc++.h>
using namespace std;
int abss(int &n){
int res = 0;
if(n <= 0) res = -n;
else res = n;
return res;
}
int main()
{
int n;
cin>> n;
cout<< abss(n) << endl;
return 0;
}