If all your code is indeed what is shown above, then I don’t see the problem. However, when I get this issue, sometimes its because malloc/new/whatever detects heap corruption, often this corruption has already occurred previously in the program, but the crash has been delayed until the next call to new/malloc. If you read other … Read more
If you are using c++ then you shouldn’t reinvent the wheel, just use vectors: Edit: I didn’t understand your question, if you just want to have and array of arrays allocated on the heap just use:
malloc is used for dynamic memory allocation. As said, it is dynamic allocation which means you allocate the memory at run time. For example when you don’t know the amount of memory during compile time. One example should clear this. Say you know there will be maximum 20 students. So you can create an array with … Read more
You use pointers. Specifically, you use a pointer to an address, and using a standard c library function calls, you ask the operating system to expand the heap to allow you to store what you need to. Now, it might refuse, which you will need to handle. The next question becomes – how do you … Read more
The stack is the memory set aside as scratch space for a thread of execution. When a function is called, a block is reserved on the top of the stack for local variables and some bookkeeping data. When that function returns, the block becomes unused and can be used the next time a function is … Read more