How can I copy the values from a vector to an array? [closed]

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How can I get the dValues[] in the line double dValues[] = {what should i input here?}?Because I'm using an array. The goal is to get the mode.

#include <iostream>
#include <vector>
#include <numeric>

using namespace std;

double GetMode(double daArray[], int iSize) {
// Allocate an int array of the same size to hold the
// repetition count
int* ipRepetition = new int[iSize];
for (int i = 0; i < iSize; ++i) {
    ipRepetition[i] = 0;
    int j = 0;
    bool bFound = false;
    while ((j < i) && (daArray[i] != daArray[j])) {
        if (daArray[i] != daArray[j]) {
            ++j;
        }
    }
    ++(ipRepetition[j]);
}
int iMaxRepeat = 0;
for (int i = 1; i < iSize; ++i) {
    if (ipRepetition[i] > ipRepetition[iMaxRepeat]) {
        iMaxRepeat = i;
    }
}
delete [] ipRepetition;
return daArray[iMaxRepeat];
}


int main()  
{
int count, minusElements; 
float newcount, twocount;
cout << "Enter Elements:";
std::cin >> count;
std::vector<float> number(count);




cout << "Enter " << count << " number:\n";
for(int i=0; i< count ;i++)  
{
   std::cin >> number[i];
}

double dValues[] = {};
int iArraySize = count;

std::cout << "Mode = "
            << GetMode(dValues, iArraySize) << std::endl;

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You already have all the values in your number vector, but if you wanted to copy those values into a new array called dValues, you have to allocate it on the heap (since you don't know the size at compile-time), copy the elements from the vector, and later free up that memory:

double *dValues = new double[number.size()];

for (size_t i = 0; i < number.size(); i++)
{
    dValues[i]  = number[i];
}

// whatever you need to do with dValues

delete [] dValues;

You're also not checking that you're within the bounds of your vector in the for loop. A safer implementation would use the push_back() method on the vector rather than assigning the values by index.

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If I understood you correctly, you wish to copy the elements from the vector to array. If yes -

 float *dValues = new float[count] ; // Need to delete[] when done
 std::copy( number.begin(), number.end(), dValues );

std::copy is in algorithms header. But why do you want to use/create raw array for this task. You already have the vector number and just pass it to GetMode(..)