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Questions and Answers
The predefined variable used to read data from the keyboard in C++ is called _____.
The predefined variable used to read data from the keyboard in C++ is called _____.
False (B)
The insertion operator for user input in C++ is represented by _____.
The insertion operator for user input in C++ is represented by _____.
False (B)
The data type that stores whole numbers without decimals in C++ is _____.
The data type that stores whole numbers without decimals in C++ is _____.
False (B)
The data type 'double' in C++ is sufficient for storing up to 15 decimal digits.
The data type 'double' in C++ is sufficient for storing up to 15 decimal digits.
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The data type 'float' in C++ is sufficient for storing 6-7 decimal digits.
The data type 'float' in C++ is sufficient for storing 6-7 decimal digits.
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Study Notes
- C++'s cin is used for getting user input from the keyboard.
- cin utilizes the extraction operator (>>) for reading data.
- cout, its counterpart, is used for outputting values and is pronounced "see-out".
- Data types determine the size and nature of the information a variable can hold.
- A boolean data type stores true or false values and occupies 1 byte.
- char data type stores a single character or ASCII value, also occupying 1 byte.
- int data type stores whole numbers without decimals, available in sizes of 2 or 4 bytes.
- float data type accommodates fractional numbers with one or more decimals, taking up 4 bytes.
- double data type caters to larger fractional numbers containing one or more decimals, occupying 8 bytes.
- Learning about individual data types is covered in the upcoming chapters.
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