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who is tryna help me

Kokodhill23 (1)
I am just getting so many errors... HELP

// File: retrieve_form_OOP_2.cpp
// Author: Komal Dhillon
// cs102 Online
// Date: 04/09/18
// Description: This program retrieves three form fields and sends the result
// back to the browser

#include <iomanip>
#include <iostream>
#include <cstring>
#include <cstdlib>
#include <string>
using namespace std;

struct FIELDS
{
string name;
string value;
};



class WebApps
{
private:

string qs;
int cnt;

public: //public access specifier.



void parse(string qs, FIELDS f_name_value_pairs[]); //declared public member function parse for the class WebApps

string param(string lookUp, FIELDS f_name_value_pairs[], int f_cnt);//declared public member function param for the class WebApps

WebApps (){ //constructor

cout << "Content-type:text/html\n\n"; //get ready to print on browser
set_qs(getenv("QUERY_STRING")); //save string to private qs
//cout << "debug with get_qs: " << get_qs(); //testing functions
set_cnt(how_many(get_qs()));
//cout << "<br>debug with get_cnt: " << get_cnt();//testing functions

void set_qs(string f_getenv)
{
qs = f_getenv;
}

void set_cnt(int f_how_many)
{
cnt = f_how_many;
}

string get_qs()
{
return qs;
}

int get_cnt()
{
return cnt;
}

};


//main begins
int main()
{
WebApps wo; //created wo object of instance WebApps

FIELDS *name_value_pairs = wo.create_array(wo.get_cnt());

wo.parse(wo.get_qs(), name_value_pairs);

// debug to show content of name_value_pairs
cout << "debug to show content of name_value_pairs array: " << endl << "<br>";
for (int index = 0; index<wo.get_cnt; index++) {
cout << "name: " << name_value_pairs[index].name << " ";
cout << "value: " << name_value_pairs[index].value << endl << "<br>";
}


cout << "Content-type:text/html\n\n";

cout << "debug with qs: " << wo.get_qs() << " " << endl;

wo.parse(wo.get_qs(), name_value_pairs); //calling parsefunction of object wo

string first = wo.param("first", name_value_pairs, wo.get_cnt());//calling param function of object wo and storing the returned value in first

string last = wo.param("last", name_value_pairs, wo.get_cnt());//calling param function of object wo and storing the returned value in last

string season = wo.param("season", name_value_pairs, wo.get_cnt());//calling param function of object wo and storing the returned value in color


int summer,winter,fall;


cout<<"\n\n<html>";
cout<<"\n<head>";
cout<<"\n<h2>Which Season is your favorite?</h2>";
cout<<"\n<title>Parameter Parser</title>";
cout<<"\n</head>";
cout<<"\n<body>";
cout<<"\nfirst value="<<first<<"<br>";
cout<<"\nlast value="<<last<<"<br>";
cout<<"\nseason value="<<season<<"<br>";

if (season=="summer")
{
cout<< "Hello " <<first << " " << last << " You enjoy hot weather"<<endl;
}
else if (season=="winter"){
cout<< "Hello " << first << " " << last << " You like snow or cold weather"<<endl;
}
else if (season=="fall")
{
cout<< "Hello " << first << " " << last << " You enjoy Sweater Weather (so do I)"<<endl;
}

cout<<"\n</body>";
cout<<"\n</html>";
cout<<"\n\n";

return 0;
}

}

void set_qs(string f_getenv)
{
qs = f_getenv;
}

void set_cnt(int f_how_many)
{
cnt = f_how_many;
}

string get_qs()
{
return qs;
}

int get_cnt()
{
return cnt;
}

/////////////////////////////////////////////////////
// how_many()
// This will count and return how many = signs in the QUERYSTRING
////////////////////////////////////////////////////
int WebApps::how_many(string f_qs) {

int f_cnt = 0;
for (int i=0; i<f_qs.length(); i++) {
if (f_qs[i] == '=') {
f_cnt++;
}
}
return f_cnt;
}




////////////////////////////////////////////////////
//create_array
// Creates a dynamic array
////////////////////////////////////////////////////
FIELDS* WebApps:: create_array (int f_cnt) {

{

FIELDS fields[f_cnt];

return fields;

}

/////////////////////////////////////////////
// parse()
// This will separate the name/value pairs found after the ? in the URL
/////////////////////////////////////////////

void WebApps::parse (string f_qs, FIELDS f_name_value_pairs [])
{
cout << "debug in parse<br>\n" << endl;
string name, value;
int start_pos = 0, pos;
for (int counter=0; counter < wo.get_cnt(); counter++) {
pos = qs.find("=", start_pos);
name = qs.substr(start_pos, pos - start_pos);
cout << "name: " << name << "<br>" << endl;
start_pos = pos + 1;
pos = qs.find("&", start_pos);
f_name_value_pairs[counter].name = name;
if (pos == string::npos) {
pos = qs.length();
}
value = qs.substr(start_pos, pos - start_pos);
cout << "value: " << value << "<br>" << endl;
start_pos = pos + 1;
f_name_value_pairs [counter].value = value;
}
}

/////////////////////////////////////////////
// param()
// Will receive the value for any given form field
/////////////////////////////////////////////

string WebApps::param(string lookUp, FIELDS f_name_value_pairs[], int wo.get_cnt()){
string value;
int i = 0;


for(i = 0; i< wo.get_cnt(); i++)
{
if ( lookUp == f_name_value_pairs[i].name) {
value = f_name_value_pairs[i].value;
}

}
return value;
}

};


Last edited on
Thomas1965 (4571)
jonnin (11410)
Interestingly, the topic asks who is not trying to help, in archaic speech.
dhayden (5798)
Here is your code with the syntax errors fixed. Be sure to enable warnings when compiling this. There are still some problems that the compiler will warn you about.

A few notes:
- When you're a beginner, write one or two functions at a time. Then compile the code and fix syntax errors. If you wait until you've created a long program (like this), you'll have so many errors that it's really hard to fix them.

- Pretty much the only thing you do with f_name_value_pairs is pass it to methods of the class WebApps. That's a pretty good hint that f_name_value_pairs should itself be a member of WebApps.
- There's no need to pass the count to parse(). I've removed it. After all, the onlyreasonable value to pass is the number of fields,which you get with get_cnt()
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// File: retrieve_form_OOP_2.cpp
// Author: Komal Dhillon
// cs102 Online
// Date: 04/09/18
// Description: This program retrieves three form fields and sends the result
// back to the browser

#include <iomanip>
#include <iostream>
#include <cstring>
#include <cstdlib>
#include <string>
using namespace std;

struct FIELDS
{
    string name;
    string value;
};

class WebApps
{
  private:

    string qs;
    int cnt;

    int how_many(string f_qs);

  public:			//public access specifier.

    void parse(string qs, FIELDS f_name_value_pairs[]);	//declared public member function parse for the class WebApps

    string param(string lookUp, FIELDS f_name_value_pairs[]);	//declared public member function param for the class WebApps

    FIELDS *create_array(int f_cnt);

      WebApps()
    {						 //constructor

	cout << "Content-type:text/html\n\n";	 //get ready to print on browser
	set_qs(getenv("QUERY_STRING"));	//save string to private qs
//cout << "debug with get_qs: " << get_qs(); //testing functions
	set_cnt(how_many(get_qs()));
//cout << "<br>debug with get_cnt: " << get_cnt();//testing functions
    }

    void set_qs(string f_getenv)
    {
	qs = f_getenv;
    }

    void set_cnt(int f_how_many)
    {
	cnt = f_how_many;
    }

    string get_qs()
    {
	return qs;
    }

    int get_cnt()
    {
	return cnt;
    }

};

//main begins
int
main()
{
    WebApps wo;			//created wo object of instance WebApps

    FIELDS *name_value_pairs = wo.create_array(wo.get_cnt());

    wo.parse(wo.get_qs(), name_value_pairs);

// debug to show content of name_value_pairs
    cout << "debug to show content of name_value_pairs array: " << endl << "<br>";
    for (int index = 0; index < wo.get_cnt(); index++) {
	cout << "name: " << name_value_pairs[index].name << " ";
	cout << "value: " << name_value_pairs[index].value << endl << "<br>";
    }

    cout << "Content-type:text/html\n\n";

    cout << "debug with qs: " << wo.get_qs() << " " << endl;

    wo.parse(wo.get_qs(), name_value_pairs);	 //calling parsefunction of object wo

    string first = wo.param("first", name_value_pairs);	//calling param function of object wo and storing the returned value in first

    string last = wo.param("last", name_value_pairs);	//calling param function of object wo and storing the returned value in last

    string season = wo.param("season", name_value_pairs);	//calling param function of object wo and storing the returned value in color

    int summer, winter, fall;

    cout << "\n\n<html>";
    cout << "\n<head>";
    cout << "\n<h2>Which Season is your favorite?</h2>";
    cout << "\n<title>Parameter Parser</title>";
    cout << "\n</head>";
    cout << "\n<body>";
    cout << "\nfirst value=" << first << "<br>";
    cout << "\nlast value=" << last << "<br>";
    cout << "\nseason value=" << season << "<br>";

    if (season == "summer") {
	cout << "Hello " << first << " " << last << " You enjoy hot weather" << endl;
    } else if (season == "winter") {
	cout << "Hello " << first << " " << last << " You like snow or cold weather"
	    << endl;
    } else if (season == "fall") {
	cout << "Hello " << first << " " << last <<
	    " You enjoy Sweater Weather (so do I)" << endl;
    }

    cout << "\n</body>";
    cout << "\n</html>";
    cout << "\n\n";

    return 0;
}

/////////////////////////////////////////////////////
// how_many()
// This will count and return how many = signs in the QUERYSTRING
////////////////////////////////////////////////////
int
WebApps::how_many(string f_qs)
{

    int f_cnt = 0;
    for (int i = 0; i < f_qs.length(); i++) {
	if (f_qs[i] == '=') {
	    f_cnt++;
	}
    }
    return f_cnt;
}

////////////////////////////////////////////////////
//create_array
// Creates a dynamic array
////////////////////////////////////////////////////
FIELDS *
WebApps::create_array(int f_cnt)
{

    FIELDS fields[f_cnt];

    return fields;

}

/////////////////////////////////////////////
// parse()
// This will separate the name/value pairs found after the ? in the URL
/////////////////////////////////////////////

void
WebApps::parse(string f_qs, FIELDS f_name_value_pairs[])
{
    cout << "debug in parse<br>\n" << endl;
    string name, value;
    int start_pos = 0, pos;
    for (int counter = 0; counter < get_cnt(); counter++) {
	pos = qs.find("=", start_pos);
	name = qs.substr(start_pos, pos - start_pos);
	cout << "name: " << name << "<br>" << endl;
	start_pos = pos + 1;
	pos = qs.find("&", start_pos);
	f_name_value_pairs[counter].name = name;
	if (pos == string::npos) {
	    pos = qs.length();
	}
	value = qs.substr(start_pos, pos - start_pos);
	cout << "value: " << value << "<br>" << endl;
	start_pos = pos + 1;
	f_name_value_pairs[counter].value = value;
    }
}

/////////////////////////////////////////////
// param()
// Will receive the value for any given form field
/////////////////////////////////////////////

string
WebApps::param(string lookUp, FIELDS f_name_value_pairs[])
{
    string value;
    int i = 0;

    for (i = 0; i < get_cnt(); i++) {
	if (lookUp == f_name_value_pairs[i].name) {
	    value = f_name_value_pairs[i].value;
	}

    }
    return value;
}

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