# -*- coding: utf-8 -*-
"""
Created on Thu Aug 27 14:31:31 2020

@author: Sim
"""

professor = "Songyong Sim"
print(professor)
a = 7
b = 5
print(a+b)
print("a+b")

# 변수 types
x = 1.23e9
y = -1.23e-9
print(x/1000)
print(y*1000)
z = 1.234E-9
print(z*1000)

True == 1
False == 0

# 산술연산 
a = 10
b = 3
print(a+b)
print(a-b)
print(a*b)
print(a/b)

print(3*3*3*3*3)
print(3 ** 5)

print(7 // 2)
print(7 % 2)

x = 10
x = x + 1
print(x)

x += 1
print(x)

x -= 1
print(x)

x -= 2
print(x)

# 자료형 변환

a = 10
print(a)
b = float(a)
print(b)

a=10; b=3
print(a/b)

a = int(10.7)
b = int(10.3)
print(a, b)

a = '1.12e-2'
b = '10'
print(float(a)+3)
print(int(b)+3)

a = '1.23e-3'
print(float(a))
b = 10
# print(a+b) # 에러
c = str(b)
print(a+c)

print(type(a), type(b), type(1.2E3))