# Simple

## How to Swap Two Numbers Without Using Temporary Variable or Arithmetic Operators?

You have done swapping of two numbers using temporary variable or by using arithmetic operators. It can be done in following way. Lets take two numbers a=5 and b=7. Using Temporary Variable temp=a;            //temp becomes 5 a=b;                 //a becomes 7 b=temp;            //b becomes 5 Also Read: C++ program to swap two numbers using pointers Also Read: C++ …

## Java program to convert given number of days into months and days

class Days { public static void main(String…s) { int n,m,d; n=Integer.parseInt(s); m=n/30; d=n%30; System.out.println(n+” days“+” = “+m+” months “+”and “+d+” days”); } }

## Java program to swap two numbers without using temp variable

class Swap { public static void main(String…s) { int a,b; a=Integer.parseInt(s); b=Integer.parseInt(s); System.out.println(“nBefore Swap:n”+”a=”+a+”tb=”+b); a=a+b; b=a-b; a=a-b; System.out.println(“nAfter Swap:n”+”a=”+a+”tb=”+b); } }

## Java program to swap two numbers

class Swap { public static void main(String…s) { int a,b,temp; a=Integer.parseInt(s); b=Integer.parseInt(s); System.out.println(“nBefore Swap:n”+”a=”+a+”tb=”+b); temp=a; a=b; b=temp; System.out.println(“nAfter Swap:n”+”a=”+a+”tb=”+b); } }

## My First Java Program: Print a Message “Hello World”

class HelloWorld { public static void main(String…s) { System.out.println(“Hello World”); } }

## C++ program to find cube of a number using macros

Also Read: C++ program to swap two numbers using macros Also Read: C++ Program to find cube of a number using function #include<iostream.h> #include<conio.h> #define CUBE(x) (x*x*x) void main() { clrscr(); int n,cube; cout<<“Enter a number:”; cin>>n; cube=CUBE(n); cout<<“Cube=”<<cube; getch(); }

## C program to print size of different data types

#include<stdio.h> #include<conio.h> void main() { clrscr(); printf(“TypettttSize (bytes)”); printf(“nCharacterttt    %d”,sizeof(char)); printf(“nIntegertttt    %d”,sizeof(int)); printf(“nLong intttt    %d”,sizeof(long int)); printf(“nFloattttt    %d”,sizeof(float)); printf(“nDoubletttt    %d”,sizeof(double)); printf(“nLong doublettt    %d”,sizeof(long double)); getch(); }

## C++ program to swap two numbers using macros

#include<iostream.h> #include<conio.h> #define SWAP(a,b) {int temp; temp=a; a=b; b=temp;} void main() { clrscr(); int x,y; cout<<“Enter two numbers:”; cin>>x>>y; cout<<“x=”<<x<<” y=”<<y; SWAP(x,y); cout<<“nx=”<<x<<” y=”<<y; getch(); }