Difference between revisions of "CSC111 Exercises with If statements"
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__TOC__ | __TOC__ | ||
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+ | =If Statements in Python V. 2= | ||
<br /> | <br /> | ||
==Source== | ==Source== | ||
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print "statement 3" | print "statement 3" | ||
print "statement 4" | print "statement 4" | ||
− | print " | + | print "f4 done!" |
def f5(): | def f5(): | ||
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print "statement 3" | print "statement 3" | ||
print "statement 4" | print "statement 4" | ||
− | print " | + | print "f5 done!" |
def f6(): | def f6(): | ||
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print "statement 3" | print "statement 3" | ||
print "statement 4" | print "statement 4" | ||
− | print " | + | print "f6 done!" |
def f7(): | def f7(): | ||
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<br /> | <br /> | ||
<br /> | <br /> | ||
+ | |||
==Output== | ==Output== | ||
<code><pre> | <code><pre> | ||
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statement 3 | statement 3 | ||
statement 4 | statement 4 | ||
− | + | f4 done! | |
-------------------------------------------------- | -------------------------------------------------- | ||
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statement 3 | statement 3 | ||
statement 4 | statement 4 | ||
− | + | f5 done! | |
-------------------------------------------------- | -------------------------------------------------- | ||
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statement 3 | statement 3 | ||
statement 4 | statement 4 | ||
− | + | f6 done! | |
-------------------------------------------------- | -------------------------------------------------- | ||
Latest revision as of 18:14, 28 February 2015
--D. Thiebaut 13:55, 10 March 2010 (UTC)
If Statements in Python V. 2
Source
# if_tests.py
# D. Thiebaut
# A collection of if/else statements.
# Figure out what gets printed!
def f1():
a = 3
b = 5
c = 10
if a < b:
print "statement 1"
else:
if a < c:
print "statement 2"
else:
if b < c:
print "statement 3"
print "f1 done!"
def f2():
a = 30
b = 5
c = 10
if a < b:
print "statement 1"
else:
if a < c:
print "statement 2"
else:
if b < c:
print "statement 3"
print "f2 done!"
def f3():
a = 30
b = 50
c = 10
if a < b:
print "statement 1"
else:
if a < c:
print "statement 2"
else:
if b < c:
print "statement 3"
print "f3 done!"
def f4():
a = 30
b = 5
c = 10
if a < b < c:
print "statement 1"
else:
if a < c < b:
print "statement 2"
else:
print "statement 3"
print "statement 4"
print "f4 done!"
def f5():
a = 30
b = 50
c = 10
if a < b < c:
print "statement 1"
else:
if a < c < b:
print "statement 2"
else:
print "statement 3"
print "statement 4"
print "f5 done!"
def f6():
a = 3
b = 5
c = 1
if a < b < c:
print "statement 1"
else:
if a < c < b:
print "statement 2"
else:
print "statement 3"
print "statement 4"
print "f6 done!"
def f7():
L = ( ("a", 3), ("z", 5 ), ("f", 10), ("d", 0), ("c", 100) )
newL = []
rejects = []
for name, val in L:
if 0 < val < 10:
newL.append( (name, val) )
else:
rejects.append( (name, val ) )
print "newL = ", newL
print "rejects = ", rejects
def f8():
L = ( ("a", 3), ("z", 5 ), ("f", 10), ("d", 0), ("c", 100) )
newL = []
rejects = []
for name, val in L:
if val <= 10 and name > "f":
newL.append( (name, val) )
else:
rejects.append( (name, val ) )
print "newL = ", newL
print "rejects = ", rejects
def f9():
L = ( ("a", 3), ("z", 5 ), ("f", 10), ("d", 0), ("c", 100) )
newL = []
rejects = []
for name, val in L:
if not ( val <= 10 or name > "f" ):
newL.append( (name, val) )
else:
rejects.append( (name, val ) )
print "newL = ", newL
print "rejects = ", rejects
def main():
functionId = input( "Which function do you want to run? " )
print "-"*50
if functionId == 1:
f1()
elif functionId == 2:
f2()
elif functionId == 3:
f3()
elif functionId == 4:
f4()
elif functionId == 5:
f5()
elif functionId == 6:
f6()
elif functionId == 7:
f7()
elif functionId == 8:
f8()
elif functionId == 9:
f9()
else:
print "\n\n*** Invalid number! ***\n\n"
print "-"*50
main()
Output
python if_tests.py
Which function do you want to run? 1
--------------------------------------------------
statement 1
f1 done!
--------------------------------------------------
[111c@beowulf ~/temp]$ python if_tests.py
Which function do you want to run? 2
--------------------------------------------------
statement 3
f2 done!
--------------------------------------------------
[111c@beowulf ~/temp]$ python if_tests.py
Which function do you want to run? 3
--------------------------------------------------
statement 1
f3 done!
--------------------------------------------------
[111c@beowulf ~/temp]$ python if_tests.py
Which function do you want to run? 4
--------------------------------------------------
statement 3
statement 4
f4 done!
--------------------------------------------------
[111c@beowulf ~/temp]$ python if_tests.py
Which function do you want to run? 5
--------------------------------------------------
statement 3
statement 4
f5 done!
--------------------------------------------------
[111c@beowulf ~/temp]$ python if_tests.py
Which function do you want to run? 6
--------------------------------------------------
statement 3
statement 4
f6 done!
--------------------------------------------------
[111c@beowulf ~/temp]$ python if_tests.py
Which function do you want to run? 7
--------------------------------------------------
newL = [('a', 3)]
newL = [('a', 3), ('z', 5)]
newL = [('a', 3), ('z', 5)]
newL = [('a', 3), ('z', 5)]
newL = [('a', 3), ('z', 5)]
rejects = [('f', 10), ('d', 0), ('c', 100)]
--------------------------------------------------
[111c@beowulf ~/temp]$ python if_tests.py
Which function do you want to run? 8
--------------------------------------------------
newL = []
newL = [('z', 5)]
newL = [('z', 5)]
newL = [('z', 5)]
newL = [('z', 5)]
rejects = [('a', 3), ('f', 10), ('d', 0), ('c', 100)]
--------------------------------------------------
[111c@beowulf ~/temp]$ python if_tests.py
Which function do you want to run? 9
--------------------------------------------------
newL = []
newL = []
newL = []
newL = []
newL = [('c', 100)]
rejects = [('a', 3), ('z', 5), ('f', 10), ('d', 0)]
--------------------------------------------------
[111c@beowulf ~/temp]$ python if_tests.py
Which function do you want to run? 10
--------------------------------------------------
*** Invalid number! ***
--------------------------------------------------