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Computer Science For example, in program code: int Type conversion
bitwiseResult = b & c;
During assignment, if the types of the
variable and the expression do not match,
Function call expressions
implicit or explicit type conversion may
These involve calling a function and
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using its return value in an expression.
An example of function call expression occur. For example, in program code:
double x = 5; // Implicit conversion
is like program code: int result = sqrt(a) from int to double
+ pow(c, d);
int y = static_cast<int>(x); //
Assignments Explicit conversion from double to
Assignments in C++ are used to store the int
result of an expression into a variable.
The assignment operator (=) is the most Lvalue and Rvalue
common operator used for this purpose. The variable on the left side of the
Here are some important aspects of assignment operator is called an lvalue
assignments: (left value), this refers to a location in
memory. The expression on the right
Basic assignment side is an rvalue (right value), this is
The value on the right-hand side of the
= operator is evaluated and stored in a value that have no specific memory
the variable on the left-hand side. For location. For example, in program code:
example, in program code: int a = 12; int a = 10; // ‘a’ is an lvalue, ‘10’ is an
rvalue
Compound assignment operators
These operators combine an arithmetic Activity 4.5:
operation with an assignment. Examples
include +=, -=, *=, /=, and %=. For Creating a program that combines
example, in program code: expressions and assignments
int a = 14;
a += 7; // Equivalent to a = a + 7; Use the knowledge you have learnt
in previous sections, create a simple
Chained assignment program that combines expressions
Multiple assignments can be chained and assignments in a C++ program.
together, allowing the same value to Once you have created, highlighting
be assigned to multiple variables. For how they are used to manipulate and
example, in program code:
int a, b, c; store data in a C++ program
a = b = c = 20;
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