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{{fbdoc item="title" value="Operator + (Addition)"}}----
Sums two expressions

{{fbdoc item="syntax"}}##
[[KeyPgDeclare|declare]] [[KeyPgOperator|operator]] **+** ( [[KeyPgByref|byref]] //lhs// [[KeyPgAs|as]] [[KeyPgInteger|integer]], [[KeyPgByref|byref]] //rhs// [[KeyPgAs|as]] [[KeyPgInteger|integer]] ) [[KeyPgAs|as]] [[KeyPgInteger|integer]]
[[KeyPgDeclare|declare]] [[KeyPgOperator|operator]] **+** ( [[KeyPgByref|byref]] //lhs// [[KeyPgAs|as]] [[KeyPgUinteger|uinteger]], [[KeyPgByref|byref]] //rhs// [[KeyPgAs|as]] [[KeyPgUinteger|uinteger]] ) [[KeyPgAs|as]] [[KeyPgUinteger|uinteger]]

[[KeyPgDeclare|declare]] [[KeyPgOperator|operator]] **+** ( [[KeyPgByref|byref]] //lhs// [[KeyPgAs|as]] [[KeyPgSingle|single]], [[KeyPgByref|byref]] //rhs// [[KeyPgAs|as]] [[KeyPgSingle|single]] ) [[KeyPgAs|as]] [[KeyPgSingle|single]]
[[KeyPgDeclare|declare]] [[KeyPgOperator|operator]] **+** ( [[KeyPgByref|byref]] //lhs// [[KeyPgAs|as]] [[KeyPgDouble|double]], [[KeyPgByref|byref]] //rhs// [[KeyPgAs|as]] [[KeyPgDouble|double]] ) [[KeyPgAs|as]] [[KeyPgDouble|double]]

[[KeyPgDeclare|declare]] [[KeyPgOperator|operator]] **+** ( [[KeyPgByref|byref]] //lhs// [[KeyPgAs|as]] //T// [[KeyPgPtr|Pointer]], [[KeyPgByref|byref]] //rhs// [[KeyPgAs|as]] [[KeyPgInteger|integer]] ) [[KeyPgAs|as]] //T// [[KeyPgPtr|Pointer]]
[[KeyPgDeclare|declare]] [[KeyPgOperator|operator]] **+** ( [[KeyPgByref|byref]] //rhs// [[KeyPgAs|as]] [[KeyPgInteger|integer]], [[KeyPgByref|byref]] //lhs// [[KeyPgAs|as]] //T// [[KeyPgPtr|Pointer]] ) [[KeyPgAs|as]] //T// [[KeyPgPtr|Pointer]]

[[KeyPgDeclare|declare]] [[KeyPgOperator|operator]] **+** ( [[KeyPgByref|byref]] //lhs// [[KeyPgAs|as]] //T//, [[KeyPgByref|byref]] //rhs// [[KeyPgAs|as]] [[KeyPgInteger|integer]] ) [[KeyPgAs|as]] //T//
[[KeyPgDeclare|declare]] [[KeyPgOperator|operator]] **+** ( [[KeyPgByref|byref]] //lhs// [[KeyPgAs|as]] [[KeyPgInteger|integer]], [[KeyPgByref|byref]] //rhs// [[KeyPgAs|as]] //T// ) [[KeyPgAs|as]] //T//
##
{{fbdoc item="usage"}}##
//result// = //lhs// **##+##** //rhs//
##
{{fbdoc item="param"}}
##//lhs//##
The left-hand side expression to sum.
##//rhs//##
The right-hand side expression to sum.
##//T//##
Any pointer type.

{{fbdoc item="ret"}}
Returns the sum of two expressions.

{{fbdoc item="desc"}}
When the left and right-hand side expressions are numeric values, **##Operator +## (Add)** returns the sum of the two values.

When the left and right-hand side expressions are string values, **##Operator +## (Add)** concatenates the two strings and returns the result.

If an integral value ##//n//## is added to a ##//T// [[KeyPgPtr|Pointer]]## type, the operator performs pointer arithmetic on the address, returning the memory position of a ##//T//## value, ##//n//## indices away (assuming ##//n//## is within bounds of a contiguous array of ##//T//## values). This behaves differently from numeric addition, because the ##[[KeyPgInteger|Integer]]## value is scaled by ##[[KeyPgSizeof|Sizeof]]( //T// )##.

Neither operand is modified in any way.

This operator can be overloaded to accept user-defined types.

{{fbdoc item="ex"}}
{{fbdoc item="filename" value="examples/manual/operator/add.bas"}}%%(freebasic)
DIM n AS SINGLE
n = 4.75 + 5.25
PRINT n
%%
will produce the output:

%%
10
%%

{{fbdoc item="lang"}}
- In the //[[CompilerOptlang|-lang qb]]// dialect, this operator cannot be overloaded.

{{fbdoc item="diff"}}
- None

{{fbdoc item="see"}}
- [[KeyPgOpConcat|Operator + (String concatenation)]]
- [[CatPgMath|Mathematical Functions]]

{{fbdoc item="back" value="CatPgOpArithmetic|Arithmetic Operators"}}{{fbdoc item="back" value="CatPgOperators|Operators"}}
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