added code

Author: vivekpatel111

BANKER.CPP

@@ -0,0 +1,141 @@
+#include <iostream.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <conio.h>
+#include "graphic.cpp"
+#include "define.cpp"
+
+int main()
+{
+	BANKER banker;
+
+	if (!banker.isSAFESTATE())
+	{
+		banker.dealloc();
+		exit(1);
+	}
+
+	char choice;
+	do
+	{
+		clrscr();
+		title();
+		box(1, 1, 24, 80);
+		gotoxy(20, 6);
+		cout << "\t1. Modify DataSheet";
+		gotoxy(20, 8);
+		cout << "\t2. Current SnapShot";
+		gotoxy(20, 10);
+		cout << "\t3. SafeState Check";
+		gotoxy(20, 12);
+		cout << "\t4. SafeSequence of Process";
+		gotoxy(20, 14);
+		cout << "\t5. Request Resources";
+		gotoxy(20, 16);
+		cout << "\t6. Check Completed Process";
+		gotoxy(20, 18);
+		cout << "\t0. Quit";
+
+		gotoxy(32, 25);
+		cout << "...Press number...";
+
+		_setcursortype(_NOCURSOR);
+		fflush(stdin);
+		choice = getch();
+
+		switch (choice)
+		{
+		case '1':
+			_setcursortype(_NORMALCURSOR);
+			clrscr();
+			banker.initDATA(1);
+			cout << endl;
+			banker.validateDATA();
+			banker.checkPRO();
+			cout << endl;
+			banker.calcDATA();
+			cout << endl
+				 << "press any key to continue...";
+			getch();
+			break;
+
+		case '2':
+			_setcursortype(_NOCURSOR);
+			clrscr();
+			banker.snapshot(1);
+			gotoxy(26, 24);
+			cout << "press any key to continue...";
+			getch();
+			break;
+
+		case '3':
+			_setcursortype(_NOCURSOR);
+			clrscr();
+			banker.snapshot(1);
+			cout << endl
+				 << endl;
+			if (banker.isSAFESTATE())
+				cout << endl
+					 << "SnapShot is in SafeState.";
+			else
+				cout << endl
+					 << "SnapShot is in UnSafeState.";
+			gotoxy(26, 24);
+			cout << "press any key to continue...";
+			getch();
+			break;
+
+		case '4':
+			_setcursortype(_NOCURSOR);
+			clrscr();
+			banker.snapshot(1);
+			cout << endl;
+			banker.findSAFESEQ();
+			gotoxy(26, 24);
+			cout << "press any key to continue...";
+			getch();
+			break;
+
+		case '5':
+			_setcursortype(_SOLIDCURSOR);
+			clrscr();
+			banker.snapshot();
+			cout << endl;
+			banker.requestRES();
+			cout << endl
+				 << "press any key to continue...";
+			getch();
+			break;
+
+		case '6':
+			_setcursortype(_SOLIDCURSOR);
+			clrscr();
+			cout << endl;
+			banker.checkPRO();
+			gotoxy(26, 24);
+			cout << "press any key to continue...";
+			getch();
+			break;
+
+		case '0':
+			_setcursortype(_NOCURSOR);
+			gotoxy(31, 21);
+			cout << "T H A N K   Y O U";
+			gotoxy(28, 25);
+			cout << "press any key to exit...";
+			getch();
+			goto EXIT;
+
+		default:
+			_setcursortype(_NOCURSOR);
+			gotoxy(28, 22);
+			cout << "Please enter valid choice.";
+			gotoxy(26, 25);
+			cout << "press any key to continue...";
+			getch();
+			break;
+		}
+	} while (1);
+EXIT:
+	return 0;
+}

CLASS.CPP

@@ -0,0 +1,33 @@
+//class declaration for BANKER'S ALGORITHM
+class BANKER
+{
+  private:
+    int no_of_process;  //process involved in snapshot
+    int no_of_resource; //resources available
+    int *resource;      //instance of each resource available before allocation
+    int **allocation;   //allocated resource at present time
+    int **maximum;      //maximum need for resource for process
+    int **need;         //maximum-allocation matrix
+    int *available;     //instance of each resource available after allocation
+    int **temp_alloc;   //temporary allocation for checking safestate
+    int *complete;      //contain information about finished process
+
+  public:
+    BANKER(void); //banker constructor which initialize variable and allocate dynamic memory
+
+    ~BANKER(void); //banker destructor which deallocates the memory and destroy object
+
+    int alloc(void);           //allocate memory dynamically
+    int dealloc(void);         //deallocate memory
+    int validateDATA(int);     //validate datasheet with algorithm
+    void calcDATA(int);        //calcute datasheet for algorithm
+    void initDATA(int);        //initialize datasheet for algorithm
+    void snapshot(int);        //show current snapshot of process
+    int isSAFESTATE(void);     //check for safe state of given snapshot
+    void save(void);           //save current safestate
+    void restore(void);        //restore to previous safestate
+    int requestRES(void);      //to request resource for process and check for deadlock
+    void grantREQ(int, int *); //granted request will be added to snapshot of process
+    void checkPRO(int);        //check if any process has completed its task and give back resources
+    void findSAFESEQ(void);    //find safe sequence to execute process
+};