Weird Error

[Prosdo]

Okay, I am writing this program for class and it kind of works. It goes through the motions, but would skip the prompt where I ask if they want to add another customer. So, I realized I missed a bracket on an if statement and it brought up this error after I corrected it:

c:\docume~1\stepha~1\desktop\progra~3.cpp:160: ANSI C++ forbids declaration `system' with no type
c:\docume~1\stepha~1\desktop\progra~3.cpp:160: `int system' redeclared as different kind of symbol
C:\DEV-C_~1\Include\stdlib.h:283: previous declaration of `int system(const char *)'
c:\docume~1\stepha~1\desktop\progra~3.cpp:160: initialization to `int' from `const char *' lacks a cast
c:\docume~1\stepha~1\desktop\progra~3.cpp:161: parse error before `return'

Here is the code:

#include <iostream.h>
#include <stdlib.h>
#include <fstream>
#include <string>
#include <iomanip>
#include <math.h>
using namespace std;
 
char cust_name[40];
double length;
double width;
double stories;
double pitch;
double total_cost;
double siding_cost;
double roofing_cost;
double area_siding;
double area_roofing;
double roof_width;
double roofing_squares;
double siding_squares;
double triangle_1;
double triangle_2;
double triangle_height;
double triangle_width;
double triangle_area;
double triangle;
double sides;
double total_roofing_cost;
double total_siding_cost;
int siding_type;
int roofing_type;
int next_customer;
const double height = 10;
const double alum = 75.00;
const double vinyl = 57.00;
const double wood = 95.00;
const double comp = 45.00;
const double sshingle = 50.00;
const double dshingle = 75.00;
string siding_string;
string roofing_string;
ofstream house;
 
int main()
{
//Customer Input
house.open("C:\\Documents and Settings\\All Users\\Desktop\\house.dat");
house<<setw(23)<<" "<<setw(34)<<"Siding and Roofing Job Caculations"<<'\n';
while(next_customer=1)
{
cout<<"Please enter your name:"<<'\n';
cin.ignore();
cin.getline(cust_name, 40);
cout<<"Please enter the length (longer side of house) of the house in feet:"<<'\n';
cin>>length;
cout<<"Please enter the width (shorter side of house) of the house in feet:"<<'\n';
cin>>width;
cout<<"Please enter the number of stories:"<<'\n';
cin>>stories;
cout<<"Please enter the pitch of the roof. Enter first number. (Example 5/12 enter 5)"<<'\n';
cin>>pitch;
//Siding Menu
siding_type=0;
cout<<"\t Siding Type"<<'\n';
cout<<"\t \t (1) Aluminum Siding"<<'\n';
cout<<"\t \t (2) Vinyl Siding"<<'\n';
cout<<"\t \t (3) Wood Siding"<<'\n';
cout<<"\t \t (4) Composite Siding"<<'\n';
cout<<"\t \t \t Enter the number of the siding type:"<<'\n';
cin>>siding_type;
if(siding_type<1 || siding_type>4)
{
cout<<"Invalid entry"<<'\n';
cout<<"Enter 1,2,3, or 4"<<'\n';
cin>>siding_type;
}
//Roofing Menu
roofing_type=0;
cout<<"\t Roofing Type"<<'\n';
cout<<"\t \t (1) Standard Shingle"<<'\n';
cout<<"\t \t (2) Designer Shingle"<<'\n';;
cout<<"\t \t \t Enter the number of the siding type:"<<'\n';
cin>>roofing_type;
if(roofing_type<1 || roofing_type>2)
{
cout<<"Invalid entry"<<'\n';
cout<<"Enter 1 or 2"<<'\n';
cin>>roofing_type;
}
//Siding Cost Caculations
if(siding_type==1)
{
siding_cost = alum;
siding_string = "Aluminum";
}
if(siding_type==2)
{
siding_cost = vinyl;
siding_string = "Vinyl";
}
if(siding_type==3)
{
siding_cost = wood;
siding_string = "Wood";
}
if(siding_type==4)
{
siding_cost = comp;
siding_string = "Composite";
}
 
//Siding Cost Caculations
if(roofing_type==1)
{
roofing_cost = sshingle;
roofing_string = "Standard";
}
if(roofing_type==2)
{
roofing_cost = dshingle;
roofing_string = "Designer";
}
 
//Area Caculations
pitch=triangle_1;
triangle_height = pow(triangle_1,2) - pow(triangle_2,2);
triangle_width = 2 * triangle_1 * triangle_2;
triangle = sqrt(pow(triangle_height,2) + pow(triangle_width,2));
triangle_area = triangle *2;
sides = (width*2 + length*2) * height;
area_siding = sides + triangle_area;
siding_squares = area_siding/100;
 
roof_width = pow(height,2) + pow(width/.5,2);
area_roofing = (roof_width * length) * 2;
roofing_squares = area_roofing/100;
 
//Cost Caculations
total_siding_cost = siding_squares * siding_cost * 1.05;
total_roofing_cost = roofing_squares * roofing_cost * 1.05;
total_cost = total_siding_cost + total_roofing_cost;
 
//Output
house<<setw(5)<<" "<<setw(14)<<"Customer Name:"<<setw(1)<<" "<<setw(40)<<cust_name<<'\n';
house<<setw(5)<<" "<<setw(13)<<"Shingle Type:"<<setw(2)<<" "<<setw(40)<<roofing_type<<'\n';
house<<setw(5)<<" "<<setw(13)<<"Roof Squares:"<<setw(2)<<" "<<setw(40)<<roofing_squares<<'\n';
house<<setw(5)<<" "<<setw(10)<<"Roof Cost:"<<setw(5)<<" "<<setw(40)<<roofing_cost<<'\n';
house<<setw(5)<<" "<<setw(12)<<"Siding Type:"<<setw(3)<<" "<<setw(40)<<siding_type<<'\n';
house<<setw(5)<<" "<<setw(15)<<"Siding Squares:"<<setw(1)<<" "<<setw(40)<<siding_squares<<'\n';
house<<setw(5)<<" "<<setw(12)<<"Siding Cost:"<<setw(3)<<" "<<setw(40)<<siding_cost<<'\n';
house<<setw(5)<<" "<<setw(11)<<"Total Cost:"<<setw(4)<<" "<<setw(40)<<total_cost<<'\n';
house<<setw(80)<<"********************************************************************************"<<'\n';
 
//Next Customer
cout<<"Do you need caculations for another customer? (1 for Yes, 0 for No)"<<'\n';
cin>>next_customer;
}
}
      system("PAUSE");
      return 0;
}

Also I am suppose to round up the squares for the siding and roofing how do I go about doing that? Thanks.

[sicarie]

Well, I see a few things. First of all, you use these headers:

#include <iostream.h>
#include <stdlib.h>
#include <fstream>
#include <string>
#include <iomanip>
#include <math.h>
 

The .h is a depricated type - you should just have '#include <iostream>'. Also, you are using C++, not C, so get rid of stdlib.h. I'm not sure you need to use any of the C functions, but if you do, I'd go for the cstdlib library.

After that, your code should compile. If it doesn't, I'm guessing it is because of the system() function's return type being an int, and you not receiving anything back from it.

       system("PAUSE");
      return 0;
}

I'd recommend getting your current code working before you look at the rounding.