C ++ игнорирует условия условия if

Поэтому я пишу этот код просто для практики, и у меня возникла проблема, когда у меня есть несколько операторов if в строке, но даже если пользовательский ввод не удовлетворяет ни одному из первых условий оператора if, он печатает данные из первое утверждение if. Часть, с которой у меня возникли проблемы, находится внизу кода, прямо над частью «return 0».

// ConsoleApplication4.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"#include <iostream>
#include <string>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <fstream>
#include <istream>

using namespace std;

class all_supp{
private:
string name, type;
public:
all_supp();
all_supp(string y);

void enterType(string x);
string getType();

void enterName(string y);
string getName();
};

//Define Variables
all_supp::all_supp()
{
name = "unknown";
type = "unknown";
}

all_supp::all_supp(string y)
{
name = y;
type = "unknown";
}

void all_supp::enterType(string x)
{
type = x;
}

string all_supp::getType()
{
return type;
}

void all_supp::enterName(string y)
{
name = y;
}

string all_supp::getName()
{
return name;
}// MusclePharm Assault structure
struct preworkout_assault{
static int creatine_hcl, creatine_mono;
static double cost;
};

int preworkout_assault::creatine_hcl = 250;
int preworkout_assault::creatine_mono = 1000;
double preworkout_assault::cost = 29.99;

// C4 Extreme structure
struct preworkout_c4{
static int creatine_hcl, creatine_mono, creatine_nitrate, caffeine;
static double cost;
};

int preworkout_c4::creatine_hcl = 0;
int preworkout_c4::creatine_mono = 0;
int preworkout_c4::caffeine = 135;
int preworkout_c4::creatine_nitrate = 1000;
double preworkout_c4::cost = 29.99;

// BSN N.).-Xplode structure
struct preworkout_bsn{
static int creatine_hcl, creatine_mono, creatine_nitrate, caffeine;
static double cost;
};

int preworkout_bsn::creatine_hcl = 0;
int preworkout_bsn::creatine_mono = 0;
int preworkout_bsn::caffeine = 135;
int preworkout_bsn::creatine_nitrate = 1000;
double preworkout_bsn::cost = 29.99;

// How the structures are accessed within main
preworkout_assault assault_data;
preworkout_c4 c4_data;
preworkout_bsn bsn_data;

int _tmain(int argc, _TCHAR* argv[])
{
//Access general class
all_supp all;

//Variables
string set_type, set_name;

cout << "Welcome to the bodybuilding supplement recommendation application!" << endl << endl;
cout << "The categories of supplements that this application includes are:" << endl << "- Pre-workouts" << endl << "- Intra-workouts" << endl << "- Fat-loss boosters" << endl << "- Recovery boosters" << endl << endl;
cout << "White kind of supplement are you looking for? ";

// Choose the type of supplement
cin >> set_type;

all.enterType(set_type);

if(getline(cin,set_type) == "pre-workout" || "preworkout" || "pre workout" || "preworkouts" || "pre-workouts" || "pre workouts")
{
cout << "Okay, so you're looking for a pre-workout!" << endl;
cout << "These are the top five pre-workout products currently on the market:" << endl << endl;
cout << "- MusclePharm Assault\n- Cellucor C4 Extreme\n- BSN N.O.-Xplode 2.0\n- Pro Supps MR. HYDE\n- Driven Sports CRAZE" << endl << endl;
cout << "Which of the listed pre-workouts would you like to learn more about? Type \"exit\"if you would like to switch the type of supplement you are looking for.";

cin >> set_name;

all.enterName(set_name);

if(all.getName() == "musclepharm assault", "assault", "musclepharm", "muscle", "pharm", "assaullt", "asault")
{
//Print MusclePharm Assault data from struct here
cout << endl << endl << "Awesome! Here's some information about MusclePharm Assault:" << endl << "- Cost per 30 servings: $" << assault_data.cost << endl << "- Creatine monohydrate content per serving: " << assault_data.creatine_mono << "mg" << endl << "- Creatine HCl per serving: " << assault_data.creatine_hcl << "mg" << endl;
}

else if(all.getName() == "Cellucor C4 Extreme", "cellucor", "c4", "extreme", "c", "4")
{
//Print C4 data from struct here
cout << endl << endl << "Awesome! Here's some information about Cellucor C4 Extreme:" << endl << "- Cost per 30 servings: $" << c4_data.cost << endl << "- Creatine monohydrate content per serving: " << c4_data.creatine_mono << "mg" << endl << "- Creatine HCl per serving: " << c4_data.creatine_hcl << "mg" << endl << "- Creatine Nitrate per serving: " << c4_data.creatine_nitrate << "mg" << endl << "- Caffeine per serving: " << c4_data.caffeine << endl << endl;
}

else if(all.getName() == "BSN N.O.-Xplode 2.0", "bsn", "no", "bsn no", "n.o.", "n.o")
{
//Print C4 data from struct here
cout << endl << endl << "Awesome! Here's some information about BSN N.O.-Xplode 2.0:" << endl << "- Cost per 30 servings: $" << bsn_data.cost << endl << "- Creatine monohydrate content per serving: " << bsn_data.creatine_mono << "mg" << endl << "- Creatine HCl per serving: " << bsn_data.creatine_hcl << "mg" << endl << "- Creatine Nitrate per serving: " << bsn_data.creatine_nitrate << "mg" << endl << "- Caffeine per serving: " << bsn_data.caffeine << endl << endl;
}
}

cout << endl << endl;

return 0;
}

Я знаю, что он полудлинный, но я ценю любые ваши советы! Извините, если это грязно, я новичок в кодировании.

ура