Language Basics
Check all syntactically correct statements.
<quiz display=simple > {Which input statements are correct?
|type="[]"} -a = raw_input() -a = raw_input(“enter a number”) -a = raw_input() - a = raw_input(enter your name) {
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}
{ Which print statements are correct?
|type="[]"} -print “9” + “9” -print int(“nine”) -print str(9) + “nine” -print 9 + 9 -nine = 9 print nine {
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}
{Which are correct arithmetical operations?
|type="[]"} -a = 1 * 2 -2 = 1 + 1 -5 + 6 = y -seven = 3 * 4 {
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}
{ Which are correct variable names?
|type="[]"} -result -my.result -print -result77 {
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}
{Which are correct type conversions?
|type="[]"} -int(7.0+0.1) -str(1.2 * 3.4) -float(“77”+”.0”) -str( 9 / 0 ) {
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}
{Which operations result in 8?
|type="[]"} -65 // 8 -17 % 9 -2 ** 4 -64 ** 0.5 {
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}
{Which lines are commented?
|type="[]"} +“””This is a comment””” +# This is a comment -// this is a comment - This is a comment {
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}
Answer the questions:
- What is a variable?
- What names may variables have?
- What is an integer?
- What is a string?
- How to assign a variable?
- How to add, substract, and multiply numbers?
- What can be printed with print?
- How can text be read from the keyboard?
- How are comments written in a program?
