C ++-数组类型'unsigned __int64 [amount *]'是不可分配的

Question

I'm writing implementation of algorithm in Visual 2015 and in this part of code

int amount;
//some code that change value of variable amount
uint64_t table[amount*9];

a got an error

array type 'unsigned __int64 [amount*]' is not assignable

I read that i should initialize an array so i did

uint64_t table[amount*9] = {0};

But it didn't help. Any suggestions ??

Answer 1

C++ doesn't support variable sized arrays. Use std::vector instead:

    int amount;
    //some code that change value of variable amount
    std::vector<uint64_t> table(amount*9);