invalid use of non-lvalue array

An "invalid use of non-lvalue array" error occurs when you try to modify or assign a value to an array that is not a variable or an lvalue. An lvalue is a value that can be assigned to, such as a variable or a memory location.

For example, the following code would produce an "invalid use of non-lvalue array" error:

int main() {
int array[5] = {1, 2, 3, 4, 5};
array = {6, 7, 8, 9, 10};
return 0;
}

In this example, the array is being assigned a new value using braces, which is invalid. Instead, you would need to assign each element of the array individually, like this:

int main() {
int array[5] = {1, 2, 3, 4, 5};
for (int i = 0; i < 5; i++) {
array[i] = i + 6;
}
return 0;
}

This code uses a loop to assign each value of the array to the desired value.