데이터 구조 및 분석 ch_1_7 Conditon and Loop statement

Jul 3, 2021 » writing

KAIST 산업및시스템공학과 문일철_ 데이터 구조 및 분석 수업을 참고하여 작성하였습니다

ch_1_7 Conditon and Loop statement

정의

Conditon and Loop statement

1. if
: A condition statement
- if boolean :
    statements for True
- elif boolean :
    statements for True
- else :
    statements for False
: python does not have a switch-case statement
: carefully indentations (들여쓰기)

numScore = 100
if numScore > 90 :
    print('A')

numScore = 75
if numScore > 90 :
    print('A')
else :
    print("Lower grade")

if numScore > 90 :
    print('A')
elif numScore > 80 :
    print('B')
elif numScore > 70 :
    print('C')
else :
    print('D or F')

# A
# Lower grade
# C

2. For
: A loop statement
- for variable in sequence
    statement for loop
- else :
    a break
: continue or break

for itr in range(10):
    print(itr)

sum = 0
for itr in range(1,11) :
    sum += itr
    print(sum)

for itr in range(1,100,10) :
    if str == 51:
        continue
    else :
        print(itr)

for itr in range(5):
    print(itr)
else :
    print('!')
print('done')

for itr in range(5):
    if itr == 3:
        break
    print(itr)
else :
    print('!')
print('done')

# 0
# 1
# 2
# 3
# 4
# 5
# 6
# 7
# 8
# 9
# 1
# 3
# 6
# 10
# 15
# 21
# 28
# 36
# 45
# 55
# 1
# 11
# 21
# 31
# 41
# 51
# 61
# 71
# 81
# 91
# 0
# 1
# 2
# 3
# 4
# !
# done
# 0
# 1
# 2
# done