When you define a variable outside the scope of a function, that variable’s value is actually written into your executable file. This means you can only use a constant value. Since you don’t know everything about the runtime environment at compile time (which classes are available, what is their structure, etc.), you cannot create objective … Read more
Global variables and static variables are automatically initialized to zero. If you have simply at global scope it will be all zeros at runtime. But actually there is a shorthand syntax if you had a local array. If an array is partially initialized, elements that are not initialized receive the value 0 of the appropriate type. You … Read more
How should I use array of function pointers in C? How can I initialize them?
In (ANSI) C99, you can use a designated initializer to initialize a structure: Other members are initialized as zero: “Omitted field members are implicitly initialized the same as objects that have static storage duration.” (https://gcc.gnu.org/onlinedocs/gcc/Designated-Inits.html)
I was reading a book on Java and came across an example in which an array of type double was initialized in a way that I haven’t seen before. What type of initialization is it and where else can it be used?
In C language, objects with static storage duration have to be initialized with constant expressions, or with aggregate initializers containing constant expressions. A “large” object is never a constant expression in C, even if the object is declared as const. Moreover, in C language, the term “constant” refers to literal constants (like 1, ‘a’, 0xFF and so on), enum members, and results of … Read more
You are facing issue in because, in the LHS, you’re using an array type, which is not assignable. To elaborate, from C11, chapter §6.5.16 assignment operator shall have a modifiable lvalue as its left operand. and, regarding the modifiable lvalue, from chapter §6.3.2.1 A modifiable lvalue is an lvalue that does not have array type, […] You need to use strcpy() to copy … Read more
I was trying to make a Minecraft server and got the following error on startup: Error occured during initialization of VM Could not reserve enough space for object heap Error: Could not create the Java Virtual Machine Error: A fatal exception has occurred. Program will exit. I tried everything I could find: I created CLASS … Read more
Actually, probably the “best” way to initialize the ArrayList is the method you wrote, as it does not need to create a new List in any way: The catch is that there is quite a bit of typing required to refer to that list instance. There are alternatives, such as making an anonymous inner class … Read more
You can do something like this, it will create array with new size based on provided. The output will be: