Any two simple C++ programs

Check give number is Even or Odd

#include<iostream.h>
#include<conio.h>

void main()
{
int no;
clrscr();
cout<<"Enter any num: ";
cin>>no;
if(no%2==0)
{
cout<<"Even num";
}
else
{
cout<<"Odd num";
}
getch();
}

Output

Enter any num : 5
Odd num

Swap two numbers using third variables

Example

#include<iostream.h>
#include<conio.h>

void main()
{
int a,b,c;
clrscr();
cout<<"Enter value of a: ";
cin>>a;
cout<<"Enter value of b: ";
cin>>b;
c=a;
a=b;
b=c;
cout<<"After swap a: "<<a<<"b: "<<b;
getch();
}

Output

Enter value of a: 10
Enter value of b: 20
After swap a: 20 b: 10