Decrement operator

Decrement operator

#include<iostream>

using namespace std;

int main()

{

int num;

cout<<"Enter a number : ";

cin>>num;

num--;

cout<<"Number after decrement  = "<<num;

return 0;

}

Using increment operator

Using increment operator 

#include<iostream>

using namespace std;

int main()

{

int num;

cout<<"Enter a number : ";

cin>>num;

num++;

cout<<"Number after increment = "<<num;

return 0;

}

Program using Arithmetic operators

Program using Arithmetic operators +,-,*,/.

#include<iostream>

using namespace std;

int main()

{

char ch;

int num1,num2,add,subt,multp,divid;

cout<<"Enter two numbers : "<<endl;

cin>>num1; 

cin>>num2;

cout<<"Enter the operator +,-,*,/ to perform operation : ";

cin>>ch;

switch(ch)

{

case '+':

{

add = num1+num2;

cout<<"Sum = "<<add;

break;

}

case '-':

{

subt = num1-num2;

cout<<"Subtraction = "<<subt;

break;

}

case '*':

{

multp = num1*num2;

cout<<"Product = "<<multp;

break;

}

case '/':

{

divid = num1/num2;

cout<<"Division = "<<divid;

break;

}

default:

{

cout<<"You entered wrong choice"<<endl;

  }

 }

return 0;

}

Program using constant

Program using constant

#include<iostream>

using namespace std;

int main()

{

float const pi = 3.14;

float radius;

float area;

cout<<"Enter radius : ";

cin>>radius;

area = pi*(radius*radius);

cout<<"Area of Circle = "<<area;

}

Program that takes single character and displays it on the screen

Program that takes single character and displays it on the screen

#include<iostream>

using namespace std;

int main()

{

char ch;

cout<<"Enter any character : ";

cin>>ch;

cout<<"The character you entered is : "<<ch<<endl;

return 0;

}

Program for sum of two floating points

Program for sum of two floating points

#include<iostream>

using namespace std;

int main()

{

float num1,num2,sum;

cout<<"Enter first numbers : ";

cin>>num1;

cout<<"Enter second number : ";

cin>>num2;

sum = num1+num2;

cout<<"Answer is "<<sum<<endl;

return 0;

}

Program using two cout statements

Program using two cout statements

#include<iostream>

using namespace std;

int main()

{

cout<<"My name is Norm"<<endl;

cout<<"I am a programmer"<<endl;

return 0;

}

Division of two integers

Program accepting two integers and giving result after division

#include<iostream>

using namespace std;

int main()

{

           int num1, num2,result;

           cout<<"Enter First Number : ";

           cin>>num1;

      

           cout<<"Enter second Number : ";

           cin>>num2;

           result = num1/num2;

           cout<<"Division = "<<result<<endl;

           

           return 0;

}

Product of two integers

Program accepting two numbers and printing their product

#include<iostream>

using namespace std;

int main()

{

           int num1, num2,product;

           cout<<"Enter First Number : ";

           cin>>num1;

      

           cout<<"Enter second Number : ";

           cin>>num2;

           product = num1*num2;

           cout<<"Sum = "<<product<<endl;

           

           return 0;

}

Difference of two integers

Program accepting two integers and printing its difference

#include<iostream>

using namespace std;

int main()

{

           int num1, num2,difference;

           cout<<"Enter First Number : ";

           cin>>num1;

      

           cout<<"Enter second Number : ";

           cin>>num2;

           difference = num1-num2;

           cout<<"Difference = "<<difference<<endl;

           

           return 0;

}

Sum of Two Integers

Program accepting two integers and printing their sum

#include<iostream>

using namespace std;

int main()

{

           int num1, num2,sum;

           cout<<"Enter First Number : ";

           cin>>num1;

      

           cout<<"Enter second Number : ";

           cin>>num2;

           sum = num1+num2;

           cout<<"Sum = "<<sum<<endl;

           

           return 0;

}

Single cout Statement

Using single cout statement to get the following output

Output  : 

Subject            Marks
Mathematics    100 

Computer         80 

Chemistry        98

Program : 

#include<iostream>

using namespace std;

int main()

{

    cout<<"Subject\t\tMarks\nMathematics\t\t100\nComputer\t\t80\nChemistry\t\t98"<<endl;

            return 0;

}

Outputting Sum

Outputting Sum

#include<iostream>
using namespace std;

int main()
{
                        int num1, num2, sum;
                        cout<<"Enter two Numbers : ";
                        cin>>a;
                        cin>>b;

                        sum = a+b;
                             
                        cout<<"Sum = "<<sum;
                        
                        return 0;
}   

                          

User Input Program

User Input Program (cin)

#include<iostream>
using namespace std;

int main()
{
                int num;

                cout<<"Enter a number ";
                cin>>num;
        
           cout<<"Number you entered is : "<<num;

            return 0;

}

Displaying a Message

Displaying a Message

#include<iostream>

using namespace std;

int main()

{

            cout<<"This is my first Program ";

            return 0;

}

Hello World Program

Hello World in C++

#include<iostream>
using namespace std; 
int main()
{               
cout<<"Hello World ";              
 return 0;
}