Konversi Perulangan Suhu Celcius ke Fahrenheit & Reamur

#include <iostream>
using namespace std;

int main()
{
    float f,r;
    int j,c;
    c=10;

    cout<<"|Celcius |Fahrenheit\t|Reamur |\n|";
    cout<<"========|==============|=======|"<<endl;
    for(j=1; j<=10; j++){
            r = (c*4/9);
            f = (c*9/5)+32;
            cout<<"|"<<c<<"\t |"<<f<<"\t\t|";
            cout<<r<<"\t|";
        cout<<endl;
        c+=10;
    }
    cout<<"================================="<<endl;
}