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linearEq.cpp
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linearEq.cpp
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#include <iostream>
#include <string>
#include <iomanip>
using namespace std;
void MainMenu()
{
cout << "\nMAIN MENU";
string MainMenu[3] = {"End", "Edit LE constant", "Show the solution"};
for (int i = 0; i < 3; i++)
{
cout << "\n"
<< i << ". " << MainMenu[i];
}
}
float Const[3][4] = {{0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}};
void View()
{
cout << setw(2) << "|" << setw(3) << Const[0][0] << setw(6) << Const[0][1] << setw(6) << Const[0][2] << "| |x| |" << setw(8) << Const[0][3] << "|" << endl;
cout << setw(2) << "|" << setw(3) << Const[1][0] << setw(6) << Const[1][1] << setw(6) << Const[1][2] << "| |y| = |" << setw(8) << Const[1][3] << "|" << endl;
cout << setw(2) << "|" << setw(3) << Const[2][0] << setw(6) << Const[2][1] << setw(6) << Const[2][2] << "| |z| |" << setw(8) << Const[2][3] << "|" << endl;
}
void Edit()
{
for (int e = 0; e < 3; e++)
{
cout << "Equation " << e + 1 << endl;
cout << "insert X constant\t:";
cin >> Const[e][0];
cout << "insert Y constant\t:";
cin >> Const[e][1];
cout << "insert Z constant\t:";
cin >> Const[e][2];
cout << "insert total of Eq." << e + 1 << "\t:";
cin >> Const[e][3];
}
}
void Result(float Const[3][4])
{
for (int g = 0; g < 3; g++)
{
for (int h = 3; h >= g; h--)
Const[g][h] /= Const[g][g];
for (int i = 0; i < 3; i++)
{
if (g == i)
continue;
for (int j = 3; j >= g; j--)
Const[i][j] -= Const[i][g] * Const[g][j];
}
}
string v[3] = {"X", "Y", "Z"};
for (int i = 0; i < 3; i++)
cout << v[i] << " = " << Const[i][3] << endl;
}
int main()
{
int main;
do
{
View();
MainMenu();
cout << "\n\nWhat do you want :";
cin >> main;
switch (main)
{
case 0:
{
cout << "\nMerci Beaucoup...\n\n";
break;
}
case 1:
Edit();
break;
case 2:
Result(Const);
break;
default:
{
cout << "\nError!!!" << endl;
}
}
} while (main != 0);
system("pause");
return 0;
}