Mid I-2: Iftaar Items

#include <iostream>
#include <string>
#include <iomanip>

using namespace std;

struct Items{
    string name;
    float unit_price, total;
    int quantity;
};

void setZero(Items *X, int ni);
void readData(Items *X, int ni);
void Calculate_Bill(Items *X, int ni, float &total);
void Show_Bill(Items *X, int ni, float &total);

int main(){

    int i, ni;

    float total = 0.00;

    cout << "Number of Items: ";
    cin >> ni;

    Items It[ni];

    setZero(&It[0], ni);
    readData(&It[0], ni);
    Calculate_Bill(&It[0], ni, total);
    Show_Bill(&It[0], ni, total);

    return 0;
}



void setZero(Items *X, int ni){
    for(int i = 0; i < ni; i++){
        X[i].name = "N/A";
        X[i].unit_price = 0.00;
        X[i].total = 0.00;
        X[i].quantity = 0;
    }
}


void readData(Items *X, int ni){
    for(int i = 0; i < ni; i++){
        cout << "Enter NAME, UNIT PRICE and QUANTITY for Item " << i + 1 << ": ";
        cin >> X[i].name >> X[i].unit_price >> X[i].quantity;
        X[i].total += X[i].unit_price * X[i].quantity;
        if(X[i].name == "N/A" && X[i].unit_price == 0 && X[i].quantity == 0) return;
    }
    return;
}


void Calculate_Bill(Items *X, int ni, float &total){
    for(int i = 0; i < ni && X[i].name != "N/A"; i++)
        total += X[i].total;
}


void Show_Bill(Items *X, int ni, float &total){
    cout.setf (ios :: fixed);

    cout << left << setw(4) << "No." << left << setw(17) << "ITEM NAME" << right << setw(10) << "UNIT PRICE" << right << setw(10) << "QUANTITY" << right << setw(12) << "TOTAL" << endl;
    for(int i = 0; i < ni && X[i].name != "N/A"; i++){
        cout << left << setw(4) << i + 1 << left << setw(17) << X[i].name << right << setw(10) << setprecision(2) << X[i].unit_price << right << setw(10) << X[i].quantity << right << setw(12) << setprecision(2) << X[i].total << endl;
        total += X[i].total;
    }
    if(total > 1000){
        for(int i = 0; i < 53; i++)
            cout << "-";
        cout << endl;
        cout << left << setw(25) << "TOTAL" << right << setw(28) << total << endl;
        cout << left << setw(25) << "+10% Service Charge: " << right << setw(28) << total / 10 << endl;
        total += total / 10;
    }

    for(int i = 0; i < 53; i++)
        cout << "-";
    cout << endl;
        for(int i = 0; i < 53; i++)
        cout << "-";
    cout << endl;
    cout << left << setw(25) << "GRAND TOTAL" << right << setw(28) << total << endl;
}