Cedula Ecuador

#include <iostream>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char** argv) {

    int cedula,ced,pares,impares,total,dec=0;
    int a,b,c,d,e,f,g,h,i,j,k;

    cout<<"Ingrese su cedula: "<<endl;
    cin>>cedula;

    ced=cedula;

    a=cedula/1000000000;
    cedula=cedula-(a*1000000000);
    b=cedula/100000000;
    cedula=cedula-(b*100000000);
    c=cedula/10000000;
    cedula=cedula-(c*10000000);
    d=cedula/1000000;
    cedula=cedula-(d*1000000);
    e=cedula/100000;
    cedula=cedula-(e*100000);
    f=cedula/10000;
    cedula=cedula-(f*10000);
    g=cedula/1000;
    cedula=cedula-(g*1000);
    h=cedula/100;
    cedula=cedula-(h*100);
    i=cedula/10;
    cedula=cedula-(i*10);
    j=cedula/1;
    cedula=cedula-(j*1);

    //cout<<cedula<<endl<<a<<endl<<b<<endl<<c<<endl<<d<<endl<<e<<endl<<f<<endl<<g<<endl<<h<<endl<<i<<endl<<j<<endl;
    if (cedula>2400000000){
        cout<<"Numero de cedula invalido."<<endl;
    }else{

        pares=b+d+f+h;

        a=a*2;
        if (a>9){
            a=a%10+a/10;
        }

        c=c*2;
        if (c>9){
            c=c%10+c/10;
        }

        e=e*2;
        if (e>9){
            e=e%10+e/10;
        }

        g=g*2;
        if (g>9){
            g=g%10+g/10;
        }

        i=i*2;
        if (i>9){
            i=i%10+i/10;
        }

        impares=a+c+e+g+i;

        total=pares+impares;



        while (dec-total!=j && dec<total+10){
            dec=dec+10;
        }

        if (dec-total==j){
            cout<<"valido"<<endl;
        }else {
            cout<<"Cedula erronea"<<endl;
        }




    }
    return 0;

}