easy

解题

#include<bits/stdc++.h>
using namespace std;
int main(){
    short a,b,c;
    cin>>a>>b;
    c=a*a+b*b;
    printf("%.2f",sqrt(c));
}

用函数做

#include<bits/stdc++.h>
using namespace std;
int gougu(short a,short b){
    short c=a*a+b*b;
    printf("%.2f",sqrt(c));
}
int main(){
    short a,b;
    cin>>a>>b;
    gougu(a,b);
}

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