problem in function call

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Hello,

Actually i am looking for fuction call for my client side but keep continuing problem with function call & i saw an error with C2059 "syntax error" when i made my programme.

    #include <iostream>
    #include <cmath>
    #include <iomanip>
    using namespace std;
    int math (double cartons, double totalcost, double totalprofit, double milkprofit, double cost);
    int main()
    {
    int math;
    char cartons,totalcost,totalprofit,milkprofit,cost;
    math= cartons + totalcost + totalprofit + milkprofit + cost;
    return (0);
    }
    int math()
    {
    char ans = 'y';
    bool quad_answer = false;
    do
    {
    double LitersMilkProduce;
    double cartons, totalcost, totalprofit, milkprofit, cost;
    const double LITERCOST(0.37), CARTONPROFIT(0.27), LITERS_PER_CARTONS= (3.78);
    cout << "Enter the total number of liters: ";
    cin >> LitersMilkProduce;
    cartons = LitersMilkProduce / LITERS_PER_CARTONS;
    totalcost = LitersMilkProduce * LITERCOST;
    totalprofit = LITERCOST * CARTONPROFIT;
    cout << "The total number of liters = " << LitersMilkProduce << endl;
    cout << fixed << showpoint<< setprecision(2) <<fixed << "Amount of cartons = " << cartons <<endl;
    cout << "cost of milk is = ";
    cin >> LitersMilkProduce ;
    cost = LitersMilkProduce * LITERCOST;
    cout << "profit from milk is =";
    cin >> LitersMilkProduce;
    milkprofit = LitersMilkProduce * CARTONPROFIT;
    if (quad_answer) cout << endl;
    cout << "Continue (y/n)? ";
    cin >> ans;
    while (ans == 'y');
    }
    return 0;
    };

looking for help kindly let me know about this.