🚀Java Variable:
1, Variable is the name of a memory location in which we can store the value.
2, The variable value can be change.
3, A variable is defined by combining an identifier, data types, and an initializer.
4, The first character in the variable name must be an alphabet, underscore, a digit, or a dollar sign. 5, All variables have a scope
6, The identifier is the name of the Variable.
7, Commas or blanks are not used inside a variable name.

🚀Java Variable Declaration Syntax :

Type Variable name;
int is a type
a ,b and a*b is a variable-name



Java variable declaration syntax Rules:

Type Variable name:
int Roll_No; //Roll_No declare a Variable
float Percentage; //Percentage declare a Variable
Roll_No=40 ; //assigns value in variable
Precentege=40.80; //assigns value in variable




How to Declare a variables in Java?
The Variables are declared in various types:


int abc;// this declare a variable
int abc;// (abc and a_bc are a variable)
int a,b,x,z;// (a,b,x,z) are a variable
byte a1=40;//initialize a.
double a2=40.80 ;//like a float
Char a3=“ram”;//a variable gain value ( ram )



Q-Addition of Variables Java Example?


int a,b,c,d;
a=10; b=20; c=30; d=40;
System.out.println(a+b+c+d);


Output :

100


Q-Variable increment values in Java?


int a=10;// a is a Variable
a+=40;
a=a+20;
System.out.println(a);



Output :

70


Q-Create a variable and store a no inside this variable and print output?


int a;
a=40;

OR

int a=40;
System.out.println(a);


int a;
a=40;



Output :

40


Q-Create a string variable and store a no inside string type variable and print output?


String a="Ram ";
String b="Lakshman ";

OR

String a,b;
a="Ram ";
b="Lakshman ";
System.out.println(a+b);




Output :

RamLakshman



Constant:
Constant is used when you store a value inside a variable, but use Constant after you can’t overwrite the existing deal.

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Complete & Brief Javascript notes

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👉 PYTHON CODE FOR NUMBER GUESSING GAME 👈

import random
import math

lower = 0
upper = 100

x = random.randint(lower, upper)
limit = round(math.log(upper - lower + 1, 2))

print("\n\tYou've only ", limit, " chances to guess the integer!\n")

count = 0

while count <= limit:
count += 1
guess = int(input("Guess a number:- "))

if count == limit:
print("\n\tThe number is %d" % x)
print("\tBetter Luck Next time!")
break
if x == guess:
print("Congratulations you did it in ",count, " try")
break
elif x > guess:
print("You guessed too small!")
elif x < guess:
print("You Guessed too high!")


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