min

十分简单

#include<iostream>
using namespace std;
int yexianliang(int a,int b,int c){
    int d=0;
    d=min(a,b);
    d=min(d,c);
    return d;
}
int main(){
    int a,b,c;
    cin>>a>>b>>c;
    cout<<yexianliang(a,b,c);
}