C++ 异常处理指针报错

#include<iostream>
#include<cmath>
using namespace std;
struct Res {
    float x1, x2;
};
Res resolution(int a, int b, int c)throw(int);
int main()
{
    int a, b, c;
    Res r;
    cout << "Input a,b,c";
    cin >> a >> b >> c;
    try
    {
        r = resolution(a, b, c);
        cout << "x1=" << r.x1 << "\tx2=" << r.x2 << endl;
    }
    catch (int)
    {
        cerr << "Sqrt Negative Exception" << endl;
    }
    //catch (...)
    //{
    //    cerr << "unexpected or rethrow exception!" << endl;
    //}
    return 0;
}
float quotient(int a, int b)throw(char*)
{
    if (b == 0)
    {
        throw("Divide 0!");
    }
    else
        return a / (float)b;
}
Res resolution(int a, int b, int c)
{
    Res tmpr;
    try
    {
        if (a == 0 && b != 0)
        {
            tmpr.x1 = tmpr.x2 = quotient(-c, b);
            return tmpr;
        }
        if (b * b - 4 * a * c < 0)
            throw(b);
        tmpr.x1 = quotient(-b + sqrt(b * b - 4.0 * a * c), 2 * a);
        tmpr.x2 = quotient(-b - sqrt(b * b - 4.0 * a * c), 2 * a);
        return tmpr;
    }
    catch (char* Errs)
    {
        cerr << Errs << endl;
        //exit(0);
        //throw;
    }
}

当我输入 0 0 3
的时候 ， 不能正常调出来"Divide 0!这句话 为什么
为什么报错，跟正确代码一样，我是vs2022

“Divide 0!”这是字面量，就是const char* ,你catch(char*) 所以不能捕获，改成 catch(const char*)