Thread: expression must be of integral type in function main()

Code:

//uppgift.cpp
#include <iostream>
using namespace std;
#include <float.h>

int main ()
{
   float car, tal1, tal2, tal3;

   cout <<"*******************************\n";
   cout <<"*Bensinförbruknings-kalkylator*\n";
   cout <<"*******************************\n\n";

   cout <<"Bekräfta med att trycka Enter\n\n";

   cout << "\nInmatning - Antal körda mil : ";
   cin >> tal1;
   
   cout << "\nInmatning - Antal tankade liter : ";
   cin >> tal2;

   cout <<"\nVal av bil\n\n";
   cout << "(1)Volvo\n";
   cout << "(2)Opel\n"; 
   cout << "(3)Saab\n";
   cout << "Välj bil genom att ange en siffra mellan 1-3 : ";
   cin >> car;
   switch (car)
   {
      case 1:
   cout << "Mil\tBil\tLiter\tFörbrukning\n";
   cout << "----\t----\t------\t------------\n";
    cout << "" << tal1 << " \tVolvo\t " << tal2 
         << "      " << (tal2/tal1) << "\n";
   cout <<"\n\n\n*******************************\n";
   cout <<"*    BilligaBilar AB 2006     *\n";
   cout <<"*   Skapat av Patrik Ljung    *\n";
   cout <<"*******************************\n\n";
         break;
      case 2:
   cout << "Mil\tBil\tLiter\tFörbrukning\n";
   cout << "----\t----\t------\t------------\n";
    cout << "" << tal1 << " \tOpel\t " << tal2 
         << "      " << (tal2/tal1) << "\n";
   cout <<"\n\n\n*******************************\n";
   cout <<"*    BilligaBilar AB 2006     *\n";
   cout <<"*   Skapat av Patrik Ljung    *\n";
   cout <<"*******************************\n\n";
         break;
      case 3:
   cout << "Mil\tBil\tLiter\tFörbrukning\n";
   cout << "----\t----\t------\t------------\n";
    cout << "" << tal1 << " \tOpel\t " << tal2 
         << "      " << (tal2/tal1) << "\n";
   cout <<"\n\n\n*******************************\n";
   cout <<"*    BilligaBilar AB 2006     *\n";
   cout <<"*   Skapat av Patrik Ljung    *\n";
   cout <<"*******************************\n\n";
   
    }
    return 0;
}

ok so this is my code and i cant get the switch function to work (dont mind the langauge of the text its in swedish ) but i cant figure out how to get the switch function to work

thank

you can't use a float as an argument in a switch. it has to be an integral type; integral as part of the integer family of types. int, char, long, etc.

ok ty i figured it out now