勾股定理和绝对值 题解

#include<iostream>
#include<iomanip>
#include<cmath>
using namespace std;
int a,b,c,d;
void distant(int a,int b,int c,int d){
    int x=abs(c-a),y=abs(d-b);
    double distance = sqrt(x*x+y*y);
    cout<<fixed<<setprecision(2)<<distance;
}
int main(){
    cin>>a>>b>>c>>d;
    distant(a,b,c,d);
    return 0;
}