Класс при инициализации выдает бяку =( - C++ - Ответ 3508546

#include <iostream>
using namespace std;
class veron1{
    public:
    veron1():k1(1),k2(1),k3(1){}
    veron1(int):k2(10),k3(10){}
    veron1(int,int):k3(100){}
    veron1(int,int,int){}
    int k1;
    int k2;
    int k3;
    bool operator()(int a){
        k1=a;
        return 0;
        }
    bool operator()(int a,int b){
        k1=a;k2=b;
        return 0;
        }
    bool operator()(int a,int b, int c){
        k1=a;k2=b;k3=c;
        return 0;
        }       
    };
int main(){
    int x1,x2,x3;
    class veron1 v1;
    cout<<"Enter three values: ";
    cin>>x1>>x2>>x3;
    cout<<"v1 "<<v1.k1<<" "<<v1.k2<<" "<<v1.k3<<endl;
    cout<<"add x1"<<endl;
    v1(x1);
    class veron1 v2(x1);
    cout<<"v1 "<<v1.k1<<" "<<v1.k2<<" "<<v1.k3<<endl;
    cout<<"v2 "<<v2.k1<<" "<<v2.k2<<" "<<v2.k3<<endl;
    cout<<"add x1 and x2"<<endl;
    v1(x1,x2);
    class veron1 v3(x1,x2);
    cout<<"v1 "<<v1.k1<<" "<<v1.k2<<" "<<v1.k3<<endl;
    cout<<"v3 "<<v3.k1<<" "<<v3.k2<<" "<<v3.k3<<endl;   
    cout<<"add all: x1,x2,x3"<<endl;
    v1(x1,x2,x3);
    class veron1 v4(x1,x2,x3);
    cout<<"v1 "<<v1.k1<<" "<<v1.k2<<" "<<v1.k3<<endl;
    cout<<"v4 "<<v4.k1<<" "<<v4.k2<<" "<<v4.k3<<endl;
    cout<<"The End =)"<<endl;
    return 0;
    }