Top "Lvalue" questions

lvalue required as left operand of assignment

Why am I getting lvalue required as left operand of assignment with a single string comparison? How can I fix …

c lvalue strcmp

lvalue required as left operand of assignment error when using C++

int main() { int x[3]={4,5,6}; int *p=x; p +1=p;/*compiler shows error saying lvalue required as left operand of assignment*/ …

c++ pointers required lvalue

Expression must be a modifiable L-value

I have here char text[60]; Then I do in an if: if(number == 2) text = "awesome"; else text = "you fail"; and …

c char variable-assignment lvalue

How to change the value of an NSMutableArray at a particular index

[array objectAtIndex:i] doesn't work as an L value, so it can't be used to set the object at index …

objective-c cocoa cocoa-touch nsmutablearray lvalue

what is return type of assignment operator?

I am just starting C++. I am a bit confused about the return type of assignment and dereference operator. I …

c++ reference assignment-operator dereference lvalue

lvalue required

what does the error message "Lvalue required" actually mean?

c lvalue

invalid initialization of non-const reference of type 'int&' from a temporary of type 'int'

#include<iostream> using namespace std; int fun(int &x) { return x; } int main() { cout << fun(10); …

c++ reference temporary lvalue rvalue

Return type of '?:' (ternary conditional operator)

Why does the first return a reference? int x = 1; int y = 2; (x > y ? x : y) = 100; While the second does …

c++ types reference conditional-operator lvalue

"expression must be an l-value or function designator" error when taking the address of this

I'm trying to do this in C++: class Abc { int callFunction1() }; void function1(Abc** c1) {//do something} int Abc::callFunction1() { …

c++ this lvalue prvalue

how to assign to the names() attribute of the value of a variable in R

In R, "assign('x',v)" sets the object whose name is 'x' to v. Replace 'x' by the result of …

r attributes names lvalue