#include <fstream>
#include <cstdlib>
#include <iostream>
#include <stdlib.h>
#include <time.h>
#include <string>
#include <conio.h>
 
using namespace std;
 
int report();
int falseReport();
 
int nointros = 1;
int noquestionswanted = 0;
int grade = 0;
int noguesses = 0;
int noCorrect = 0;
int nowrong = 0;
int guess = 0;
int X = 0;
int a = 0;
int b = 0;
int X2 = 0;
int a2 = 0;
int b2 = 0;
int problem = 0;
double area = 0;
int R = 0;
int lob = 0;
int heighth = 0;
int R2 = 0;
int area2 = 0;
int nothing = 0;
 
int main()
{
 
 
	if(noguesses == noquestionswanted )
	{
		report();
	}
 
	if(nointros == 1)
	{
		cout<<"hi this is the pre-algabra quiz"<<endl;
		cout<<"if you are taking this you will need a pencil and paper";
		cout<<"once you have done that press any number and enter to continue";
		cin>>nothing;
		cout<<"how many questions would you like"<<endl;
		cout<<"1. 10"<<endl;
		cout<<"2. 15"<<endl;
		cout<<"3. 20"<<endl;
		cin>>noquestionswanted;
		nointros++;
		if(noquestionswanted == 1)
 
		{
 
 
		noquestionswanted = 10;
 
 
		}
		else if(noquestionswanted == 2)
 
		{
 
 
		noquestionswanted = 15;
 
 
		}
		else if(noquestionswanted == 3)
 
		{
 
 
		noquestionswanted = 20;
 
 
		}
		else if(noquestionswanted == 999)
 
		{
 
 
		falseReport();
 
		return 0;
		}
		else
		{
 
		cout<<"I'm sorry that is not a choice please type 1, 2, or 3 next time"<<endl;
 
		main();
 
		}
		cout<<"press any number and enter to begin";
 
	}
 
	else
	{
 
		cout<<"press any number and enter to continue";
 
 
	}
 
 
 
 
 
	cin>>nothing;
 
	srand((unsigned)time(NULL));
	problem = 1 + rand() % 5;
 
 
 
if(problem == 1)
{
 
	srand((unsigned)time(NULL));
	 b = 1 + rand() % 100; 
 
	srand((unsigned)time(NULL));
	 a = 1 + rand() % 100; 
 
 
	X = b - a;
 
	cout<<"solve this equasion"<<endl;
	cout<<"a+x=b if a="<<a<<endl;
	cout<<"and b="<<b<<endl;
 
	cin>>guess;
 
	if(guess == X)
	{
 
		cout<<"correct!";
 
		noCorrect++;
 
		noguesses++;
	}
	else
	{
		cout<<"I'm sorry but you got it wrong the corect answer is:"<<endl;
 
		cout<<X<<endl;
 
		nowrong++;
		noguesses++;
	}
 
	main();
 
return 0;
}
 
else if(problem == 2)
{
 
 	srand((unsigned)time(NULL));
	b2 = 1 + rand() % 100; 
 
	 srand((unsigned)time(NULL));
	a2 = 1 + rand() % 100; 
 
 
	X2 = a2 - b2;
 
 
	if(guess == X)
	{
 
		cout<<"correct!"<<endl;
 
		noCorrect++;
 
		noguesses++;
	}
	else
	{
		cout<<"I'm sorry but you got it wrong the corect answer is:"<<endl;
 
		cout<<X2<<endl;
 
		nowrong++;
		noguesses++;
	}
 
 
 
 
 
	main();
 
 
	return 0;
 
}
 
 
 
else if(problem == 3)
{
 
 
 
	srand((unsigned)time(NULL));
	R = 1 + rand() % 100; 
 
 
 
	cin>>R;
	R2 = R *= R;
	area = 3.1415926 * R2;
 
 
 
	if(guess == area)
	{
 
		cout<<"correct!"<<endl;
 
		noCorrect++;
 
		noguesses++;
	}
	else
	{
		cout<<"I'm sorry but you got it wrong the corect answer is:"<<endl;
 
		cout<<X2<<endl;
 
		nowrong++;
		noguesses++;
	}
 
 
 
 
 
	main();
 
 
	return 0;
 
}
 
else if(problem == 4)
{
 
 
 
 
	srand((unsigned)time(NULL));
	heighth = 1 + rand() % 100; 
 
	 srand((unsigned)time(NULL));
	 lob = 1 + rand() % 100; 
 
 
 
		 area2 = heighth*lob/2;
 
		 cout<<"what is the area of a triangle with a height"<<endl;
		 cout<<"of "<<heighth<<"and a base length of "<<lob<<"?"<<endl;
 
	cin>>guess;
 
	if(guess == area2)
	{
 
		cout<<"correct!"<<endl;
 
		noCorrect++;
 
		noguesses++;
	}
	else
	{
		cout<<"I'm sorry but you got it wrong the corect answer is:"<<endl;
 
		cout<<X<<endl;
 
		nowrong++;
		noguesses++;
	}
 
	main();
 
return 0;
}
 
 
else if(problem == 5)
{
 
 
 
 
	srand((unsigned)time(NULL));
	heighth = 1 + rand() % 100; 
 
	srand((unsigned)time(NULL));
	lob = 1 + rand() % 100; 
 
 
 
		 area2 = heighth*lob/2;
 
 
		 cout<<"what is the area of a square or rectangle with a height"<<endl;
		 cout<<"of "<<heighth<<"and a base length of "<<lob<<"?"<<endl;
 
	cin>>guess;
 
	if(guess == area)
	{
 
		cout<<"correct!"<<endl;
 
		noCorrect++;
 
		noguesses++;
	}
	else
	{
		cout<<"I'm sorry but you got it wrong the corect answer is:"<<endl;
 
		cout<<X<<endl;
 
		nowrong++;
		noguesses++;
	}
 
	main();
 
return 0;
}
 
 
 
else
{
cout<<"please choose 1, 2, 3, 4, or 5"<<endl;
 
main();
 
 
return 0;
}
 
 
 
return 0;
}
 
 
 
 
report()
{
grade = noCorrect / noguesses * 100;
 
cout<<"your final report for the "<<noguesses<<" qustions you answered are as followed"<<endl;
cout<<"you got "<<noCorrect<<"correct      and      "<<nowrong<<" wrong "<<endl;
cout<<"your grade is a "<<grade<<" percent"<<endl;
cout<<"the program is over";
 
return 0;
}
falseReport()
{
 
cout<<"your final report for the 20 qustions you answered are as followed"<<endl;
cout<<"you got 20 correct      and      0 wrong"<<endl;
cout<<"the program is over";
 
 
return 0;
}