Engineering Science 1036A/B Lecture Notes - Lecture 5: Standard Streams, Backslash
10 May 2018
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Input: cin
istream object
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Inputs any non-whitespace data from the standard input (console/keyboard) on
to a declared variable
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Stands for console input
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General form: cin >> var1>>var2;
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Uses the >> (input) operator which can extract any non-whitespace data from
the standard input
>> is known as the data extraction operator
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Never use endl within cin statement
First value entered form the keyboard will be assigned to var1 while the
second one will be assigned to var2
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cout statement precedes cin statement to prompt user to enter data
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Output: cout
ostream object
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Displays a message and/or data to the standard output (console or monitor)
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stands for console output
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General form: cout <<expression <<expression;
An expression can be:
String constant: one or more characters enclosed by "
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Character constant: single character enclosed by '
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Identifier: variable name
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Formula: arithmetic and/or logical expressions
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Function call
§
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<< operator : stream insertion operator
Sends a processed stream to a console
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Backslash Codes with cout
Aka "escape sequence"•
Need to be used as string constants
Enclosed in a pair of double quotation marks
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Standard Input/output
