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C Language > Learn C Language > What is an lvalue?
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What is an lvalue?

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L-value is short form for left side value. Similarly, r-value, means, right side value.
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L-Value stands for left value L-Value of Expressions refer to a memory locations In any assignment statement L-Value of Expression must be a container(i.e. must have ability to hold the data) Variable is the only container in C programming thus L Value must be any Variable. L Value Cannot be Constant,Function...
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L-Value stands for left value L-Value of Expressions refer to a memory locations In any assignment statement L-Value of Expression must be a container(i.e. must have ability to hold the data) Variable is the only container in C programming thus L Value must be any Variable. L Value Cannot be Constant,Function or any of the available data type in C read less
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Thanks for the question Nagasanthoshi, Lvalue is something that can stand on the left side of an assignment. In most of the cases it is the variable name where the value gets stored. Thanks, Team DishaaPro www.dishaapro.com
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When first invented, in CPL, “lvalue” meant “left (of assignment) value”, and referred to expressions that the language allowed to appear on the left hand side of the assignment operator. In C, the concept was renamed as “locator value”, and referred to expressions that locate (designate) objects, because...
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When first invented, in CPL, “lvalue” meant “left (of assignment) value”, and referred to expressions that the language allowed to appear on the left hand side of the assignment operator. In C, the concept was renamed as “locator value”, and referred to expressions that locate (designate) objects, because C permits lvalues to appear in four contexts: left of assignment (except for arrays, const lvalues, and struct/union lvalues with at least one const member) left of dot (for struct/unions) right of address-of (except for register and bit field lvalues) as operand to pre/post increment/decrement (for integer lvalues, including bool and enums). read less
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lvalue refers to an object that exists beyond a single expression. Usually when an expression is evaluated it is done so with the help of stacks. The evaluated expression is then stored in a temporary location from which it is feed back to the control. This temporary location is the rvalue. Every constants...
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lvalue refers to an object that exists beyond a single expression. Usually when an expression is evaluated it is done so with the help of stacks. The evaluated expression is then stored in a temporary location from which it is feed back to the control. This temporary location is the rvalue. Every constants refers to an lvalue . for example: int x= 5+ 7; printf(" %d", x); here x is an lvalue. however if the expression would have been printf(" %d",(5+7)); it would have referred to as an rvalue read less
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In C lvalue is defined as left hand value of assignment operator. It can be a variable which can store value on the right of the assignment operato called lvalue. Rvalue can be some variable, constant or expression or function returning some value. Lvalue should be capable of storing the result of rvalue....
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In C lvalue is defined as left hand value of assignment operator. It can be a variable which can store value on the right of the assignment operato called lvalue. Rvalue can be some variable, constant or expression or function returning some value. Lvalue should be capable of storing the result of rvalue. Lvalue persists beyond an expression but rvalue is temporary. read less
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The assignment is trying to change the value of an integer constant. Fortunately, C and C++ compilers reject it as an error. The basis for the rejection is that, although the assignment's left operand 3 is an expression, it's not an lvalue. It's an rvalue. It doesn't refer to an object; it just represents...
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The assignment is trying to change the value of an integer constant. Fortunately, C and C++ compilers reject it as an error. The basis for the rejection is that, although the assignment's left operand 3 is an expression, it's not an lvalue. It's an rvalue. It doesn't refer to an object; it just represents a value. read less
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Simplest definition of lvalue typically means an expression which results into writeable memory. look at assignment statement a=b, left of = must be lvalue and right of = can be any.
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later C language standards made it more complicated, but this is the simplest way to define, though not complete
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Software Professional Trainer with 26+ years of Experience in Software Design and Development

Memory locations of a variable is called "l-value". An l-value represents that it can appear on the left of the equal sign (=).
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