ALGORITHM

1. Start the process
2. Invoke the class
a. Create two inline member functions .ie, getdata() and dispdata()
i. getdata() for input
ii. dispdata() for display
3. Open the file in fstream mode
4. Write the data in to the file
5. Slose the file
6. Stop the process

PROGRAM

#include
#include
#include
class student
{
private:
int rno;
char name[10];
float fees;
public:
void getdata()
{
cout<<"roll number";
cin>>rno;
cout<>name;
cout<>fees;
}
void dispdata()
{
cout<<"Roll number"<>wish;
}
while(wish=='y'||wish=='Y');
stdfile.close();   //close the file

getch();
}

OUTPUT

Roll number 121
Enter name Jacob
Enter fees 10000

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1) Start the process
2) Invoke the classes
3) Call the set_xy() first
a) Assign the value of x and y
b) Print the value of x and y
4) Call the sum() for second(friend)
a) Again assign the temp value of x and y
5) Print the value of x and y
6) Stop the process

PROGRAM

#include
class M
{
int x;
int y;
public:
void set_xy(int a,int b)
{
x=a;
y=b;
}
friend int sum(M m);
};
int sum(M m)
{
int M ::* px=&M :: x;
int M ::* py=&M :: y;
M *pm=&m;
int s=m.*px + pm->*py;
return s;
}
main()
{
M n;
void (M :: *pf)(int,int)=&M :: set_xy;
(n.*pf)(10,20);
cout<<"Sum="<*pf)(30,40);
cout<<"Sum="<
Output:
	Sum=30

	Sum=70
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		Fri, 12 Mar 2010 09:45:07 +0000
				
		
		
		
		
		
		http://studentprojects.in/?p=1044

					AIM: A program to solve a quadratic equation, using OOP techniques. ALGORITHM: 1) Start the process 2) Invoke the classes 3) Get the input for a,b,c; 4) Call the function getinfo() and display() 5) Check if a=0 a) True : compute c/b; i) Print the value of a/c; b) False: compute b*b-4*a*c; i) If (

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										AIM: 	

	A program to solve a quadratic equation, using OOP techniques.

ALGORITHM: 
1)	Start the process

2)	Invoke the classes

3)	Get the input for a,b,c;

4)	Call the function getinfo() and display()

5)	Check if a=0

a)	True : compute c/b;

i)	Print the value of a/c;

b)	False: compute b*b-4*a*c;

i)	If ( b*b-4*a*c)=0

ii)	Call img();

iii)	Otherwise : call real(a,b,c);

6)	Stop the process
PROGRAM:
	#include
	#include
		class equation
		{
			private:float a,b,c;
			public: void getinfo(float  a, float b,float c );
				void display( );
				void equal(float  a, float b);
				void imag( );
				void real(float a,float b,float c);
		};
		void  equation :: getinfo(float aa,float bb,float cc)
		{
	                a=aa;
			b=bb;
		        c=cc;
		}
		void equation::display( )
		{
			cout<>aa>>bb>>cc;
			e.getinfo(aa,bb,cc);
			e.display( );
			if(aa = =0)
			{
				float temp;
				temp = cc/bb;
				cout<<” Linear Roots”<
OUTPUT:

	Enter the three numbers 2 4 1

	Roots are imaginary

	X1= - 0.292893

	X2= - 1.707107
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