C Error Lvalue Required
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What Does Lvalue In C Means
or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack rvalue in c Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up What does “lvalue required” mean in a C lvalue required error in turbo c++ compiler error? [closed] up vote 0 down vote favorite #include //line 1 #include //line 2 void main() //line 3 { //line 4 int a=6,g=7,b=3; //line 5 clrscr(); //line 6 printf("%d",a>?g=a:g=b); //line 7 getch(); //line 8 } Case 1: before saving the file This will give an error at line no 7 'Lvalue required'. But when I compile no error will come and after running, it produced output
How To Remove Lvalue Error In C
3. Case 2 : after saving the file And when we save this file then we get an error "Lvalue required'. sorry for my mistake and Write question here #include //line 1 #include //line 2 void main() //line 3 { //line 4 int a=6,g=7,b=3; //line 5 clrscr(); //line 6 printf("%d",a>b?g=a:g=b); //line 7** getch(); //line 8 } Case 1: before saving the file This will give an error at line no 7 'Lvalue required'. But when I compile no error will come and after running, it produced output 3. Case 2 : after saving the file And when we save this file then we get an error "Lvalue required'. c lvalue share|improve this question edited Aug 24 '14 at 15:57 Jonathan Leffler 438k61508821 asked Nov 23 '12 at 6:28 ajava 22138 closed as not a real question by H2CO3, talonmies, Jens Gustedt, lenik, WhozCraig Nov 23 '12 at 8:53 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit
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Lvalue Required String
Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error: lvalue http://stackoverflow.com/questions/13524104/what-does-lvalue-required-mean-in-a-c-compiler-error required in this simple C code? (Ternary with assignment?) up vote 8 down vote favorite 7 I have : #include int main() { int a=5,b=6; (a>b)?b=a:b=b; // Here is the error return 0; } But if I replace : (a>b)?b=a:b=b; // Error with (a>b)?(b=a):(b=b); // No-Error I understand the lvalue is a value to which something can be assigned and how is it different http://stackoverflow.com/questions/6966299/error-lvalue-required-in-this-simple-c-code-ternary-with-assignment from rvalue, but why is the extra parenthesis making the difference. c ternary-operator conditional-operator share|improve this question edited Dec 11 '11 at 10:45 user166390 asked Aug 6 '11 at 10:51 Yugal Jindle 13.6k2583159 3 C and C++ are not the same language. Your question is for C. –Delan Azabani Aug 6 '11 at 11:02 Ya... I know that.. but the exact code behaves same in both C and C++ –Yugal Jindle Aug 6 '11 at 13:10 add a comment| 4 Answers 4 active oldest votes up vote 7 down vote accepted Assignment has a lower precedence than the ternary operator so the line evaluates like: ((a>b)?b=a:b)=b; use: b=(a>b)?a:b; share|improve this answer answered Aug 6 '11 at 10:58 Scott Logan 81611025 1 -1, not true. See the wikipedia explanation at en.wikipedia.org/wiki/Operators_in_C_and_C%2B%2B#Notes –Johannes Schaub - litb Aug 6 '11 at 11:17 I'm sorry I don't see it, they show e = a < d ? a++ : a = d being parsed like e = ((a < d ? a++ : a) = d) which appears to be similiar to what I have written. Do
logical operatorC conditional operatorsC Programming Comma OperatorC arrow operatorC Programming operator precedence & associativityC ExpressionsExpressions HomeC Programming ExpressionL-Value of Expression R-Value of Expression Relational operators in an expression Conditional and assignment operator in expressionPost increment operator http://www.c4learn.com/c-programming/c-l-value-expression/ in expressionC multiple increment operators inside printfUse of pre/post Increment operator in expressionL-Value of Expression : C Programming Pritesh2014-09-03T16:40:37+00:00 In the previous chapter we have learnt about C Programming Expressions, in this chapter we will be learning about L-Value of Expression.What is L-Value of Expression ?L-Value stands for left valueL-Value of Expressions refer to a memory locationsIn any in c 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 CDiagram Showing L-Value of Expression : Example of L-Value of Expression : #include int main() error in c { int num; num = 5; return(0); } In the above expression, Constant value 5 is being assigned to a variable ‘num'. Variable ‘num' is called as storage region's , ‘num' can considered as LValue of an expression.Re-commanded Concepts : Concept of Variables and Constants in CImportant Tips :Below are some of the tips which are useful to make your concept about L-Value of Expression more clear.Lvalue cannot be a Constantint main() { int num; 5 = num; //Error return(0); }You cannot assign the value or any constant value to another constant value because meaning of constant is already defined and it cannot be modified.Lvalue cannot be a Constant VariableEven we cannot assign a value to a constant variable. Constant variable should not be used as L Value.int main() { const num; num = 20; //Error return(0); }Lvalue cannot be a MACROWe know that macros gets expanded before processing source code by compiler. All the macros will be replaced by defined value using pre-processor before compiling program.#define MAX 20 int ma