Add, Int, Float, Double
#include
#include
int add (int a,int b);
float add (float a, float b, float c);
double add (double x, double y);
{
return (a+b)
}
float add (float a, float b, float c);
{
return (a+b+c)
}
double add (double x, double y);
{
return (x+y)
}
void main()
{
clrscr();
cout<
cout<
cout<
getch();
}
CALCULATE INTEREST:
#include(iostream.h)
#include(conio.h)
#include(math.h)
void main()
{
double p, r, t, i, am;
cout<< " Enter principal, rate , time ?";
cin>> p >> r >> t;
i = (p * r* t) / 100;
am = p + i;
cout<< "\n Principal Amt = Rs. " << p;
cout<< "\n Rate = " << r << "%" ;
cout << "\n Time = " << t << "yrs.";
cout<< "\n The Interest Amt = Rs. " << i ;
cout<< "\n The Total Amt = Rs. " << am;
am = pow((p* ( 1 + (r/100)), t);
i = am - p;
cout << "\n The Interest Amt = Rs. " << i;
cout<< "\n The Total Amt = Rs. " << am;
getch();
}
FIND QUOTIENT AND REMINDER ADDING 2 INTEGER:
#include
#include
int main()
{ // Code Copyright @ Coders Guide http://codersguide.org
clrscr();
int x,y,add,quotient,remainder;
cout << “Enter 2 integers: ”;
cin>>x>>y;
add= x+y;
quotient=x/y;
remainder=x-(quotient*y);
cout << “addition of ” << x << ” & ” << y << ” = ” << add << “\n”;
cout << “Quotient of ” << x << ” & ” << y << ” = ” << quotient << “\n”;
cout << “Remainder of ” << x << ” & ” << y << ” = ” << remainder << “\n”;
getch();
return 0;
}
FRIEND FUNCTION:
#include
#include
class Cmplx1
{
int real,imagin;
public :
void get()
{
cout<<"\n\n\t ENTER THE REAL PART : ";
cin>>real;
cout<<"\n\n\t ENTER THE IMAGINARY PART : ";
cin>>imagin;
}
friend void sum(Cmplx1,Cmplx1);
};
void sum(Cmplx1 c1,Cmplx1 c2)
{
cout<<"\n\t\tRESULT : ";
cout<<"\n\n\t["<
cout<<" ] + [ "<
cout<<" ] = "<
}
void main()
{
Cmplx1 op1,op2;
clrscr();
cout<<"\n\n\tADDITION OF TWO COMPLEX NUMBERS USING FRIEND FUNCTIONS\n\n";
cout<<"\n\tINPUT\n\n\t\t OPERAND 1";
op1.get();
cout<<"\n\n\t\t OPERAND 2";
op2.get();
sum(op1,op2);
getch();
}
FUNCTION OVERLOADING:
#include
#include
#include
#define pi 3.14
class fn
{
public:
void area(int); //circle
void area(int,int); //rectangle
void area(float ,int,int); //triangle
};
void fn::area(int a)
{
cout<<"Area of Circle:"<
}
void fn::area(int a,int b)
{
cout<<"Area of rectangle:"<
}
void fn::area(float t,int a,int b)
{
cout<<"Area of triangle:"<
}
void main()
{
int ch;
int a,b,r;
clrscr();
fn obj;
cout<<"\n\t\tFunction Overloading";
cout<<"\n1.Area of Circle\n2.Area of Rectangle\n3.Area of Triangle\n4.Exit\n:”;
cout<<”Enter your Choice:";
cin>>ch;
switch(ch)
{
case 1:
cout<<"Enter Radious of the Circle:";
cin>>r;
obj.area(r);
break;
case 2:
cout<<"Enter Sides of the Rectangle:";
cin>>a>>b;
obj.area(a,b);
break;
case 3:
cout<<"Enter Sides of the Triangle:";
cin>>a>>b;
obj.area(0.5,a,b);
break;
case 4:
exit(0);
}
getch();
}
HYBRID INHERITANCE:
#include
#include
class student
{
protected:
int roll_number;
public:
void get_number(int a)
{
roll_number=a;
}
void put_number(void)
{
cout<<"Roll No.: "< }
};
class test:public student
{
protected:
float part1, part2;
public:
void get_marks (float x, float y)
{
part1=x;
part2=y;
}
void put_marks(void)
{
cout<<"Marks obtained: \n";
cout<<"Part1="< cout<<"Part2="< }
};
class sports
{
protected:
float score;
public:
void get_score(float s)
{
score=s;
}
void put_score(void)
{
cout<<"Sports wt: "< }
};
class result : public test, public sports
{
float total;
public:
void display(void);
};
void result::display(void)
{
total=part1+part2+score;
put_number();
put_marks();
put_score();
cout<<"Total Score: "<}
int main()
{
result student_1;
student_1.get_number(1234);
student_1.get_marks(27.5,33.0);
student_1.get_score(6.0);
student_1.display();
return 0;
}
INHERITANCE STUDENT CLASS:
#include
#include
using namespace std;
class Person {
public:
Person(string name, int age) {
this->name = name;
this->age = age;
}
string getName() {
return name;
}
int getAge() {
return age;
}
private:
string name;
int age;
};
class Student : public Person
{
public:
Student(string name, int age, float grade) : Person(name, age) {
this->grade = grade;
}
float getGrade() {
return grade;
}
private:
float grade;
};
int main() {
cout << "Creating a student Class..." << endl;
Student johnDoe("XYZ", 30, 5.0);
cout << "Student's name: " << XYZ.getName() << endl;
cout << "Student's age: " << XYZ.getAge() << endl;
cout << "Student's grade: " << XYZ.getGrade() << endl;
return 0;
}
OVERLOAD STRING CLASS:
#include
#include
using namespace std;
class String
{
char *str;
public:
String();
String(const char *s);
String(const String& s);
void setString(const char *s);
void setString(const String& s);
int stringLength() const;
char *getString() const;
String& operator=(const String& s);
};
String::String()
{
str = 0;
}
String::String(const char *s)
{
str = new char[strlen(s) + 1];
strcpy(str, s);
}
String::String(const String& s)
{
str = new char[strlen(s.str) + 1];
strcpy(str, s.str);
}
void String::setString(const char *s)
{
setString(String(s));
}
void String::setString(const String& s)
{
*this = s;
}
int String::stringLength() const
{
return strlen(str);
}
char *String::getString() const
{
return str;
}
String& String::operator=(const String& s)
{
char *temp = new char[strlen(s.str) + 1];
strcpy(temp, s.str);
delete [] str;
str = temp;
return *this;
}
String operator+(const String& a, const String& b)
{
char *temp = new char[a.stringLength() + b.stringLength() + 1];
strcpy(temp, a.getString());
strcat(temp, b.getString());
return String(temp);
}
int main()
{
String s1 = "Hello World";
String s2;
s2.setString("This is a string");
cout<<"string 1 is "<< s1.stringLength() <<" characters long"<
cout<<"string 1 is "<< s1.getString() <<'\n';
cout<<"string 2 is "<< s2.getString() << endl <
cout<<"assign string 2 to string 1"<
s1.setString(s2);
cout<<"string 1 is "<< s1.getString() <
return 0;
}
SUM & AVERAGE of TWO INTEGERS:
#include
#include
using namespace std;
int main (int argc, char *argv[])
{
int num[100];
int n;
register int i;
int sum = 0;
float avg;
cout << "Enter number of items in array: ";
cin >> n;
for (i = 0; i < n; i++)
{
cout << "Enter the " << i+1 << "th number: ";
cin >> num[i];
sum += num[i];
}
avg = (float) sum/n;
cout << "Sum is " << sum << "\nAnd Average = " << avg;
getch();
}
VIRTUAL CLASS:
#include
#include
class base
{
public:
virtual void show()
{
cout<<"\n Base class show:";
}
void display()
{
cout<<"\n Base class display:" ;
}
};
class drive:public base
{
public:
void display()
{
cout<<"\n Drive class display:";
}
void show()
{
cout<<"\n Drive class show:";
}
};
void main()
{
clrscr();
base obj1;
base *p;
cout<<"\n\t P points to base:\n" ;
p=&obj1;
p->display();
p->show();
cout<<"\n\n\t P points to drive:\n";
drive obj2;
p=&obj2;
p->display();
p->show();
getch();
}
