C ++ Biggest number checker

Hi guys, I was tasked with creating a program that creates n arrays of 10 random numbers. The program should add all integers and display the result. After that, it should check which of the sum is the largest and it should display this array and the result. I'm having trouble with this and would like some help! Thanks again. Here is my code:

#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;
double random(unsigned int &seed);
unsigned int seed = 5;
void generateData(int set[10]);
int sumData(int set[10]);
void checkData(int sumResult, int arrayNumber);
int main (int argc, char * const argv[]) {
    int arrayNumber, sumResult; 
    int set[10];
    do {
        cout << "Number of Arrays to Compare: " << endl;
        cin >> arrayNumber;
    } while (arrayNumber < 0);
    for (int i = 0; i < arrayNumber; ++i) {
        generateData(set);
        sumResult = sumData(set);
        cout << "Sum --> " << sumResult << endl;
        checkData(sumResult, arrayNumber);
    }
    return 0;
}

double random(unsigned int &seed) {
    const int MODULUS = 15749;
    const int MULTIPLIER = 69069;
    const int INCREMENT = 1;
    seed = ((MULTIPLIER * seed) + INCREMENT) % MODULUS;
    return double(seed) / double(MODULUS);
}

void generateData(int set[10]) {
    for (int i = 0; i < 10; ++i) {
        set[i] = int (5 + 6 * random(seed));
        cout << set[i] << " || ";
    }
}

int sumData(int set[10]) {
    int sumTotal = 0;
    for (int i = 0; i < 10; ++i)
        sumTotal = sumTotal + set[i];
    return sumTotal;
}

void checkData(int sumResult, int arrayNumber) {
    int largerNumber;
    int tempSet[2];
    for (int i = 0; i < arrayNumber; ++i) {
        if (sumResult > largerNumber) {
            tempSet[i] = sumResult;
        }
    }
}