major corrections in the files - bad CPPLINT and non-compilable codes

computer_oriented_statistical_methods/Bisection_method.CPP

@@ -1,53 +1,40 @@
-#include <iostream.h>
-#include <conio.h>
-#include <math.h>
+#include <cmath>
+#include <iostream>
 
-float eq(float i)
-{
-	return (pow(i, 3) - (4 * i) - 9); // original equation
+float eq(float i) {
+    return (std::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;
-		}
-	}
+int main() {
+    float a, b, x, z;
 
-START:
+    for (int i = 0; i < 100; i++) {
+        z = eq(i);
+        if (z >= 0) {
+            b = i;
+            a = --i;
+            break;
+        }
+    }
 
-	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 << "]";
+    std::cout << "\nFirst initial: " << a;
+    std::cout << "\nSecond initial: " << b;
+    for (int i = 0; i < 100; i++) {
+        x = (a + b) / 2;
+        z = eq(x);
+        std::cout << "\n\nz: " << z << "\t[" << a << " , " << b
+                  << " | Bisect: " << x << "]";
 
-		if (z < 0)
-		{
-			a = x;
-		}
-		else
-		{
-			b = x;
-		}
+        if (z < 0) {
+            a = x;
+        } else {
+            b = x;
+        }
 
-		if (z > 0 && z < 0.0009) // stoping criteria
-		{
-			goto END;
-		}
-	}
+        if (z > 0 && z < 0.0009)  // stoping criteria
+            break;
+    }
 
-END:
-	cout << "\n\nRoot: " << x;
-	getch();
+    std::cout << "\n\nRoot: " << x;
+    return 0;
 }