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#include <iostream>
#include <stdio.h>
#include <math.h>
#include <string>
using namespace std;
void clearBuffer()
{
cin.clear();
cin.ignore( numeric_limits< streamsize >::max(), '\n' );
}
int radius;
double pi = 3.14159265358979323846;
double a;
double b;
double c;
double v;
double w;
double x;
double y;
double x1;
double x2;
double x3;
double y11 = y * v;
double y2 = w * x;
double y3 = y11  y2;
double answer1;
double answer2;
double answer3 = answer1  answer2;
double yfinal = answer3 / y3;
double xtimesx = answer1  (yfinal * y);
double finalanswer;
double xfinalanswer = xtimesx / x;
char choice;
double addition (double a, double b)
{
return (a+b);
}
double subtraction (double a, double b)
{
return (ab);
}
double multiplication (double a, double b)
{
return (a*b);
}
double division (double a, double b)
{
return (a/b);
}
double quadratica (double a, double b, double c)
{
return (b + sqrt(b*b  4*a*c))/(2 * a);
}
double quadraticb (double a, double b, double c)
{
return (b  sqrt(b*b  4*a*c))/(2 * a);
}
double circle_area_function (double radius)
{
return (pi*(radius * radius));
}
double circumference_function (double radius)
{
return (2 * pi * radius);
}
int main(){
cout << "Welcome to the Maths Problem solver, this program has been designed to work out answers for you." << endl;
cout << "Pick which kind of formulae do you want to use:" << endl;
cout << "1) ax^2 + bx + c = 0" << endl;
cout << "2) pi*r^2" << endl;
cout << "3) 2 * pi * r" << endl;
cout << "4) a+b" << endl;
cout << "5) ab" << endl;
cout << "6) a*b" << endl;
cout << "7) a/b" << endl;
cout << "8) Simultaneous equations" << endl;
cin >> choice;
{
clearBuffer();
}
if (choice == '1'){
cout << "Input your a:" << endl;
cin >> a;
cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
cout << "Input your b:" << endl;
cin >> b;
cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
cout << "input your c:" << endl;
cin >> c;
cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
{
double x;
x = quadratica (a,b,c);
cout << "Your first answer is " << x << endl;
}
{
double y;
y = quadraticb (a,b,c);
cout << "Your second answer is " << y << endl;
}
}
if (choice == '2'){
cout << "Input your radius." << endl;
cin >> radius;
cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
{
double circle_area;
circle_area = circle_area_function (radius);
cout << "Your answer is " << circle_area << endl;
}
}
if (choice == '3'){
cout << "Insert your radius." << endl;
cin >> radius;
cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
{
double circumference;
circumference = circumference_function (radius);
cout << "Your answer is " << circumference << endl;
}
}
if (choice == '4'){
cout << "Insert your a." << endl;
cin >> a;
cout << "Insert your b." << endl;
cin >> b;
{
double addition_answer;
addition_answer = addition (a, b);
cout << "Your answer is " << addition_answer << endl;
}
}
if (choice == '5'){
cout << "Insert your a." << endl;
cin >> a;
cout << "Insert your b." << endl;
cin >> b;
{
double subtraction_answer;
subtraction_answer = subtraction (a, b);
cout << "Your answer is " << subtraction_answer << endl;
}
}
if (choice == '6'){
cout << "Insert your a." << endl;
cin >> a;
cout << "Insert your b." << endl;
cin >> b;
{
double multiplication_answer;
multiplication_answer = multiplication (a, b);
cout << "Your answer is " << multiplication_answer << endl;
}
}
if (choice == '7'){
cout << "Insert your a." << endl;
cin >> a;
cout << "Insert your b." << endl;
cin >> b;
{
double division_answer;
division_answer = division (a, b);
cout << "Your answer is " << division_answer << endl;
}
}
if (choice == '8'){
cout << "Insert your first x." << endl;
cin >> x;
cout << "Insert your first y." << endl;
cin >> y;
cout << "Insert your second x." << endl;
cin >> v;
cout << "Insert your second y." << endl;
cin >> w;
cout << "Insert your first answer." << endl;
cin >> answer1;
cout << "Insert yout second answer." << endl;
cin >> answer2;
cout << "Your answer is " << xfinalanswer << " and " << yfinal << endl;
}
system("pause");
}
 