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38 Cards in this Set
- Front
- Back
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preprocessor directive |
#include |
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iostream |
header file allowing output to display to the screen and input read from the keyboard. |
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using namespace std; |
ensures access to the std namespace, containing entities in iostream. |
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int main() |
a function; the MUST be in every C++ program called main |
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<< |
stream insertion operator |
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endl |
stream manipulator |
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\n
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Newline Causes the cursor to go to the next line for subsequent printing.
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\t
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Horizontal tab Causes the cursor to skip over to the next tab stop.
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\a
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Alarm Causes the computer to beep.
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short int
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2 bytes -32,768 to +32,767
can be abbreviated as short |
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unsigned short int
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2 bytes 0 to +65,535
can be abbreviated as unsigned short |
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int
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4 bytes -2,147,483,648 to +2,147,483,647
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unsigned int |
4 bytes 0 to 4,294,967,295
can be abbreviated as unsigned |
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long int |
8 bytes long
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unsigned long int
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8 bytes unsigned long
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long long int |
8 bytes
can be abbreviated as long long equivalent to the hexadecimal value 7FFF,FFFF,FFFF,FFFF16, is the maximum value for a 64-bit signed integer in computing. |
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unsigned long long int
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8 bytes 0 to 18,446,744,073,709,551,615
can be abbreviated as unsigned long long |
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char |
used to store individual characters, -128 to 127 or 0 to 255 character literals are enclosed in single quotation marks |
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ASCII
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American Standard Code for Information Interchange; most commonly used method for encoding characters
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null terminator/character |
the number 0, appended to the end of string literals |
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Characters normally occupy one _____ of memory |
byte
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Strings are _____________ sequences of characters that occupy _____________ bytes of memory |
consecutive |
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Escape Sequences |
Stored internally as one character (\n) |
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2.4791E2 |
247.91 in E notation |
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7.2E-4 |
0.00072 in E notation |
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Single precision |
Key word (float) --- 4 bytes. Numbers between ±3.4E-38 and ±3.4E38 |
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Double precision
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key word (double) 8 bytes. Numbers between ±1.7E-308 and ±1.7E308
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Long double precision
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key word (long double) 8 bytes*. Numbers between ±1.7E-308 and ±1.7E308
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truncated |
what happens to any fractional part when dividing integers |
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sizeof
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will report the number of bytes of memory used by anydata type or variable
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lvalue = rvalue; |
unitsSold = 12; |
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int flightNum = 89, travelTime, departure = 10, distance;
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C++ allows you to define several variablesand only initialize some of them.
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auto |
tells the compiler to determine the variable’s data type from the initialization value.
auto interestRate = 12.0; auto stockCode = 'D'; auto customerNum = 459L; |
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scope |
the part of the program that has access to the variable
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unary , binary , and ternary
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how many operands are required for an operator. |
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number % 10 |
the rightmost digit |
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named constant |
like a variable, but its content is read-only and cannot be changed while the program is running. ex. const double BIG_HOUSES = 1.404; |
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1 |
0 |
