cannot convert ‘std::vector<ArrayIndex> (*)[2]’ to ‘std::vector<ArrayIndex>**’ for argument ‘1’ to ‘void getNextRowColumn(std::vector<ArrayIndex>**)’

Question

I have

struct ArrayIndex
{
    int rowIndex;
    int columnIndex;

};
void fn()
{
    vector<struct ArrayIndex> IntermediateIndex[2];
    getNextRowColumn(&IntermediateIndex);
}
void getNextRowColumn(vector<ArrayIndex>*  IntermediateIndex[2])
{
.................
}

It gives error cannot convert 'std::vector<ArrayIndex> (*)[2]' to 'std::vector<ArrayIndex>**' for argument '1' to 'void getNextRowColumn(std::vector<ArrayIndex>**)'

Answer 1

I guess you want to pass C array as an argument to a function then you need something like

void fn()
{
    vector<ArrayIndex> IntermediateIndex[2];
    getNextRowColumn(IntermediateIndex);
}

void getNextRowColumn(vector<ArrayIndex>*  IntermediateIndex)
{
}

But since the question is tagged C++ you better stick to C++ semantics, for example

void fn()
{
    array<vector<ArrayIndex>, 2> IntermediateIndex;
    getNextRowColumn(IntermediateIndex);
}

void getNextRowColumn(array<vector<ArrayIndex>, 2>&  IntermediateIndex)
{
}

Or use vector<vector<…>> , depends on what you are going to do with it