12、27

#include 
using namespace std;
int add(int a=1,int b=1);//有默认参数的情况下，函数声明写默认参数，定义不写

int add(int a,int b)
{
    return a+b;
}


class STU
{
private:
    int score;
    float height;

public:
    string name;
    bool gender;
    int get_score();
    float get_height();
    void set(string n,bool g,int s,float h);
};
int STU::get_score()
{
    return score;
}
float STU::get_height()
{
    return height;
}
void STU::set(string n,bool g,int s,float h)
{
    name=n;
    gender=g;
    score=s;
    height=h;
}
int main()
{
    STU s1;
    s1.set("傻逼",1,59,1.45);
    cout<