MW lab

#include <iostream>
#include <cmath>
#include <string>
#include <iomanip>

using namespace std;

int main()
{
    int j,counter;
    double r,v,i_max,f,t,max_current,max_time,max_voltage=0,i,time,trig,deg,atime;
    const double pi =3.14159265359;
    char again;
  do
   {
      cout<<"Enter your resistance value,R: ";
      cin>>r;
      cout<<"Enter your Imax value,Im  (in Ampere): ";
      cin>>i_max;
      cout<<"Enter your frequency,f (in frequency): ";
      cin>>f;

      cout<<showpoint<<right;
      cout<<endl<<setw(12)<<"Time(ms)"<<setw(15)<<"Current(A)"<<setw(15)<<"Voltage(V)"<<endl;


      for(t=0;t<=10;t++)
      {
          time=100*(t/f);
          atime=time*0.001;
          trig=2*pi*f*(atime);
          i=i_max*sin(trig);
          v=i*r;
          cout<<fixed;
          cout<<setw(12)<<setprecision(2)<<time<<setw(15)<<setprecision(4)<<i<<setw(15)<<setprecision(4)<<v<<endl;

          if(v>max_voltage)
          {
            max_voltage=v;
            max_time=time;
            max_current=i;
          }
      }

      cout<<endl<<"Vmax is: "<<max_voltage<<"V occurs with current "<<max_current<<" at time "<<max_time;
      cout.flush();
      cin.ignore();
      cout<<endl<<"Do you wish to continue ? (Y/N)";
      cin>>again;
   }
   while (again =='Y' ||again== 'y');

   return 0;

}