Thread: Error help PLEASE!!!!!

I'm fairly new to programming & I keep getting this error "error C2447: '{' : missing function header (old-style formal list?)" & I have no clue how to fix it if somebody could please help me I'd really appreciate it. Thanks

I don't know how to tell what line the error is in so i put in all the code & all the error results.

//************************************************** *******************
//TITLE Lab 3.2
//FILENAME: Lab 3.2.cpp
//RELATED FILES(S) None
//PREPARED FOR: CS115
//PROFESSOR: Professor Larry Thomison
//DESIGNER: Darrick Mohl
//DEVELOPMENT DATE: 8/1/07
//COMPILER USED: Microsoft Visual 2005
//================================================== =================
// REVISION HISTORY
// List revisions made to the program (if applicable)
// DATE PROGRAMMER DESCRIPTION OF CHANGES MADE
// 4/4/00 Porter Version 2.0
// 6/27/04 Johnson Version 3.0
//************************************************** *********************************
// THE BEGINNING OF THE PROGRAM
//************************************************** *********************************

#include <iostream> //tells which library that is used
#include <cmath>

using namespace std;

float calculateCharges (float cost);

void main() //the initializing of the main body of the program

{
float hour1, hour2, hour3, charge1, charge2, charge3, time, h_total, c_total;

cout<< "Enter the hours for car 1: " << endl;
cin>> hour1;

cout<< "Enter the hours for car 2: " << endl;
cin>> hour2;

cout<< "Enter the hours for car 3: " << endl;
cin>> hour3;

charge1=calculateCharges(hour1);

charge2=calculateCharges(hour2);

charge3=calculateCharges(hour3);

h_total=hour1+hour2+hour3;

c_total=charge1+charge2+charge3;

cout<< "Car "<< "Hours " << "Charge" << endl;
cout<< "1 " << hour1 << charge1 << endl;
cout<< "2 " << hour2 << charge2 << endl;
cout<< "3 " << hour3 << charge3 << endl;
cout<< "TOTAL " << h_total << c_total << endl;

return;
}

float calculateCharges (float cost);
{
if (time <= 3);
cost=2;
return (cost);
if (time > 3);
cost=ceil(time-3)*0.5;
return (cost);
}


1>------ Rebuild All started: Project: Lab 3 trial, Configuration: Debug Win32 ------
1>Deleting intermediate and output files for project 'Lab 3 trial', configuration 'Debug|Win32'
1>Compiling...
1>Lab 3 trial.cpp
1>.\Lab 3 trial.cpp(61) : error C2447: '{' : missing function header (old-style formal list?)
1>Build log was saved at "file://c:\Documents and Settings\Mine\My Documents\Visual Studio 2005\Projects\Lab 3 trial\Lab 3 trial\Debug\BuildLog.htm"
1>Lab 3 trial - 1 error(s), 0 warning(s)
========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========