Day 1 learnings

#sequential execution hota hai line by line---

print("Qaem is my name.", "my age is 22") #(string print)
print("hey \n" , "wassup")

print(45) #(no. print)


print(45+72, 45-27) #(direct operations perform kr skte)



#variables: 
name="zama" #(string hai so double quotes [single n triple quotes se bhi allowed]-whi print hoga)
age=17
height=164

print(name) #(agr double quotes hata dia to NAME variable k andar ki value print hogi.. wrna NAME hi print hojaega)

print("zama's age is : ", age) #AGE variable se value nikaal li

#note that ASSIGNMENT RULE:
age=18 # mtlb 18 value jaakr AGE me store hogyi..

age2=age #AGE ki hi value age2 me dedi

print(age2)


print(type(name))  #prints k variable me kis type ki value stored hai, jaise name me STRING hai, normal no.s me INT, and decimals me FLOAT ,BOOLEAN jisme True n False aati hai , and NONE mtlb no value in that variable  = DATATYPES in python
print(type(age2))

#example:
old=True
a = None
A= "hey"  #python is case sensitive , a is not equal to A
print(type(old))
print(type(a))

print(A)



#CODE 1:     sum of 2 numbers: (same for any operations)
a=5
b=9
sum=a+b
print("sum is ",a+b) 
print("another way of sum is ",sum) #ya to direct add krdo as operations python khd perform krlega, ya ir ek alag variable me value store kara ke uska print kara do


#SINGLE LINE COMMENT  - shortcut is CTRL + / after selecting the texts



#OPERATORSSSSSSSSSSSSSSSS:
#arithmetic operators:
x= 100
y=12
#then:
print(x+y)
print(x-y)
print(x*y)
print(x/y)  # division me hamesha output FLOAT value me aayega python me
print(x%y) #modulo- returns remainder
print(x**y) #power operator: computes X to the power Y


#relational operators: ( >, <, >=, <=, !=, ==) jb inhe use krte hai to mtlb hota hai ke kya jo ye line of code kehne ki koshish krrhi hai wo sahi hai ya nhi...

c=50
d=49

print(c==d) #checks if C and D are equal, returns TRUE or FALSE...
print(c>d)
print(c<=d) #sbki values TRUE ya FALSE ayengi
print(c!=d)#TRUE ayega obv...


#ASSIGNMENT OPERATORS: used to assign values in a variable...

num=10 # num me 10 ki value
num=num+10 #(ab NUM me purani value ka +10), isi ko short me likhne ka way hota hai:
num+=10 

#same goes for others... _=, *=, +=, /= , %= , **=
#example:
num/=5
print(num) #should print the new value 6.. as num me 30 stored hai...


#LOGICAL OPERATORS: not, and, or - gives t or F as per condition..
#examples:
val1= True
val2=True
print("answer is", val1 and val2)


E=30
F=40

print(E==45 and F==40) #False ' dega, as ek condition glt hai...


#TYPE CONVERSIONS: 1. conversion - kam wali value ko superior value me krna(automatic), 2. casting- zyada wali mtlb superior value ko inferior me krna (manual)

#example:
h=5
g=2.5

print(h+g) #ek float hai dusra int, pr , as float>int... conersion hoga..mtlb ans FLOAT me ayega

#but:
#j="5" #string hai
#k=2.45 #float hai
#print(j+k) - error ayega ab.. string me sirf string ko add kr skte float me nhi,,,, pr hum zabardasti us string ko integer me convert kr skte hai, and thats called CASTING"

#so now...let's CAST:
j=int("5") 
k=2.45
print(type(j))

k=str(k) #converting FLOAT to STRING - possible... but not vice versa
print(type(k))
#print(j+k) # ab no error...BUT REMEMBER THAT STRING ko FLOAT ya INT me nhi kraya ja skta



#USER INPUT:   input()  is used

#example:
# NAME=input("enter your name: ")

# print("the entered name is :", NAME)

# print(type(NAME))
# #by default, INPUT jo value leta hai wo ek string hoti hai as we saw.... to change it, we have to define by ourselves:

# NAME2=int(input("enter your age:"))
# print(NAME2)
# print(type(NAME2)) #ab int type ayega-- we used typeCasting -- same goes for float" too

#question 2: input 2 numbers and their sum

num1=int(input("enter a number:"))
num2=int(input("enter another number"))

print("the sum is:" ,num1+num2)

#area of square:

side=float(input("enter the side length:"))
print("the area of square is :" ,side*side)