rename Computer Oriented Statistical Methods -> computer_oriented_statistical_methods (#656)

computer_oriented_statistical_methods/Bisection_method.CPP

@@ -0,0 +1,53 @@
+#include <iostream.h>
+#include <conio.h>
+#include <math.h>
+
+float eq(float i)
+{
+	return (pow(i, 3) - (4 * i) - 9); // original equation
+}
+
+void main()
+{
+	float a, b, x, z;
+	clrscr();
+	for (int i = 0; i < 100; i++)
+	{
+		z = eq(i);
+		if (z >= 0)
+		{
+			b = i;
+			a = --i;
+			goto START;
+		}
+	}
+
+START:
+
+	cout << "\nFirst initial: " << a;
+	cout << "\nSecond initial: " << b;
+	for (i = 0; i < 100; i++)
+	{
+		x = (a + b) / 2;
+		z = eq(x);
+		cout << "\n\nz: " << z << "\t[" << a << " , " << b << " | Bisect: " << x << "]";
+
+		if (z < 0)
+		{
+			a = x;
+		}
+		else
+		{
+			b = x;
+		}
+
+		if (z > 0 && z < 0.0009) // stoping criteria
+		{
+			goto END;
+		}
+	}
+
+END:
+	cout << "\n\nRoot: " << x;
+	getch();
+}