farenheit to celcius in C++ Programming with Source Code

#include<iostream.h>
#include<conio.h>
void main()
{
    float f,c;
    clrscr();
    cout<<"\n Enter fehranhit  ";
    cin>>f;
    c=(f-34)*5/9;
    cout<<"\n fehranhit to celcius "<<c;
    getch();
}