我在测试程序中验证“价格验证”时收到错误，我不确定为什么。我将在下面附上Header / CPP / Tester。任何帮助表示赞赏！谢谢。
HEADER：
$data = json_decode($data,true);
CPP：
#ifndef SICT_AMAPRODUCT_H__
#define SICT_AMAPRODUCT_H__
#include <iostream>
#include "ErrorMessage.h"
#include "Product.h"
namespace sict {
class AmaProduct : public Product {
private:
//Holds a single character to tag the records as Perishable or non-Perishable product in a file.
char fileTag_;
//Unit of Measurement
char unit_[11];
protected:
ErrorMessage err_;
public:
AmaProduct(char = 'N');
//Public member functions
//returns a constant pointer to the unit_ member variable.
//returning function from Header as did not work in CPP
const char* unit()const { return unit_; };
/* Copies the incoming value string into the unit_ string.
Make sure copying does not pass the size of the unit_ array.*/
void unit(const char* value);
std::fstream& store(std::fstream& file, bool addNewLine = true)const;
std::fstream& load(std::fstream& file);
std::ostream& write(std::ostream& os, bool linear)const;
std::istream& read(std::istream& istr);
};
}
#endif
TESTER：
#include "AmaProduct.h"
#include <cstring>
#include <iomanip>
#include <fstream>
using namespace std;
namespace sict {
AmaProduct::AmaProduct(char tag) {
fileTag_ = tag;
}
void AmaProduct::unit(const char* value) {
strncpy(unit_, value, 11);
}
std::fstream& AmaProduct::store(std::fstream& file, bool addNewLine)const {
file << fileTag_ << "," << sku() << "," << name() << ","
<< price() << "," << taxed() << "," << quantity() << ","
<< unit_ << qtyNeeded();
if (addNewLine) {
file << endl;
}
return file;
}
std::fstream& AmaProduct::load(std::fstream& file) {
char s[MAX_SKU_LEN];
char n[20];
double p;
int t = 0;
int q;
int qN;
file.getline(s, MAX_SKU_LEN, ',');
sku(s);
file.getline(n, 20, ',');
name(n);
file >> p;
price(p);
file.ignore();
file >> t;
if (t) {
taxed(true);
}
else {
taxed(false);
}
file.ignore();
file >> q;
quantity(q);
file.ignore();
file >> qN;
qtyNeeded(qN);
file.ignore();
return file;
}
std::ostream& AmaProduct::write(std::ostream& os, bool linear)const {
if (!err_.isClear()) {
os << err_.message();
return os;
}
else if (linear) {
//setfill?
os << setfill(' ') << left << setw(MAX_SKU_LEN) << sku() << '|'
<< setw(20) << name() << '|' << right
<< setw(7) << fixed << setprecision(2) << cost() << '|'
<< setw(4) << quantity() << '|' << left << setw(10)
<< unit() << right << setw(4) << qtyNeeded();
}
else {
os << "Sku:" << sku() << endl
<< "Name:" << name() << endl
<< "Price:" << price() << endl;
if (taxed() == true) {
os << "Price after tax:" << (TAX + 1) * price() << endl;
}
else {
os << "Price after tax: N/A" << endl;
}
os << "Quantity on hand:" << quantity() << " " << unit() << endl
<< "Quantity needed:" << qtyNeeded();
}
return os;
}
std::istream& AmaProduct::read(std::istream& istr) {
char s[MAX_SKU_LEN];
char n[20];
char u[11];
char t;
double p;
int q;
int qN;
if (istr.fail() == false) {
cout << "Sku: ";
istr.getline(s, MAX_SKU_LEN, '\n');
//false or ! ******
if (istr.fail() == false) {
sku(s);
}
cout << "Name: ";
istr.getline(n, 20, '\n');
if (istr.fail() == false) {
name(n);
}
cout << "Unit: ";
istr.getline(u, 11, '\n');
if (istr.fail() == false) {
unit(u);
}
cout << "Taxed? (y/n): ";
istr >> t;
if (t == 'Y' || t == 'y') {
taxed(true);
}
else if (t == 'N' || t == 'n') {
taxed(false);
}
else {
err_.message("Only (Y)es or (N)o are acceptable");
istr.setstate(ios::failbit);
}
if (err_.isClear()) {
cout << "Price: ";
istr >> p;
if (istr.fail()) {
err_.message("Invalid Price Entry");
}
else {
price(p);
}
}
if (err_.isClear()){
cout << "Quantity On hand: ";
istr >> q;
if (istr.fail()) {
err_.message("Invalid Quantity Entry");
}
else {
quantity(q);
}
}
if (err_.isClear()) {
cout << "Quantity Needed: ";
istr >> qN;
if (istr.fail()) {
err_.message("Invalid Quantity Needed Entry");
}
else {
qtyNeeded(qN);
}
}
}
return istr;
}
}
失败的地方：
#include "AmaProduct.h"
using namespace sict;
using namespace std;
void piv(const char* sku, const char* name, const char* unit = "", char Tx = '\0',
const char* price = "", const char* qty = "", const char* qtyNd = "",
const char* date = "") {
cout
<< "Enter the following: " << endl
<< "Sku: " << sku << endl
<< "Name: " << name << endl
<< "Unit: " << unit << endl;
if (Tx) cout << "Taxed: " << Tx << endl;
if (price[0]) cout << "Price: " << price << endl;
if (qty[0]) cout << "Quantity on hand: " << qty << endl;
if (qtyNd[0]) cout << "Quantity needed: " << qtyNd << endl;
if (date[0]) cout << "Expiry date: " << date << endl;
cout << endl;
}
void dumpFile(const char* fname) {
ifstream f(fname);
char ch;
while (!f.get(ch).fail()) {
cout.put(ch);
}
f.clear();
f.close();
}
void _pause() {
cout << "****press enter to continue...";
cin.ignore(1000, '\n');
}
int main() {
fstream prdfile("amaPrd.txt", ios::out);
AmaProduct amaPrd;
bool ok = true;
int i;
cout << "--AmaProduct test:" << endl;
cout << "----Taxed validation test:" << endl;
piv("abc", "abc", "abc", 'a');
cin >> amaPrd;
if (cin.fail()) {
cin.clear();
cin.ignore(2000, '\n');
cout << "Passed!" << endl
<< "Message shoule be: Only (Y)es or (N)o are acceptable" << endl
<< "Your Error message: " << amaPrd << endl;
}
else {
ok = false;
cout << "Taxed validation failed" << endl;
}
_pause();
if (ok) {
cout << "----Price validation test:" << endl;
piv("abc", "abc", "abc", 'y', "abc");
cin >> amaPrd;
if (cin.fail()) {
cin.clear();
cin.ignore(2000, '\n');
cout << "Passed!" << endl
<< "Message shoule be: Invalid Price Entry" << endl
<< "Your Error message: " << amaPrd << endl;
}
else {
ok = false;
cout << "Price validation failed" << endl;
}
_pause();
}
if (ok) {
cout << "----Quantity validation test:" << endl;
piv("abc", "abc", "abc", 'y', "10", "abc");
cin >> amaPrd;
if (cin.fail()) {
cin.clear();
cin.ignore(2000, '\n');
cout << "Passed!" << endl
<< "Message shoule be: Invalid Quantity Entry" << endl
<< "Your Error message: " << amaPrd << endl;
}
else {
ok = false;
cout << "Quantity validaton failed" << endl;
}
}
_pause();
if (ok) {
cout << "----Quantity Needed validation test:" << endl;
piv("abc", "abc", "abc", 'y', "10", "10", "abc");
cin >> amaPrd;
if (cin.fail()) {
cin.clear();
cin.ignore(2000, '\n');
cout << "Passed!" << endl
<< "Message shoule be: Invalid Quantity Needed Entry" << endl
<< "Your Error message: " << amaPrd << endl;
}
else {
ok = false;
cout << "Quantity Needed validaton failed" << endl;
}
}
_pause();
if (ok) {
cout << "----Display test, the output of the Program and yours must match:" << endl;
piv("1234", "box", "kg", 'y', "123.45", "1", "5");
cin >> amaPrd;
cin.ignore(1000, '\n');
cout << "--Linear------------" << endl;
cout << "Program: 1234 |Box | 139.50| 1|kg | 5|" << endl;
cout << " Yours: " << amaPrd << endl;
cout << "--Form Display------" << endl;
cout << "--Program: " << endl;
cout << "Sku: 1234" << endl;
cout << "Name : box" << endl;
cout << "Price : 123.45" << endl;
cout << "Price after tax : 139.50" << endl;
cout << "Quantity On Hand : 1 kgs" << endl;
cout << "Quantity Needed : 5" << endl;
cout << "--Yours: " << endl;
amaPrd.write(cout, false) << endl;
}
_pause();
if (ok) {
cout << "----Storage and loading test, the output of the Program and yours must match:" << endl;
AmaProduct tprd;
amaPrd.store(prdfile);
amaPrd.store(prdfile);
prdfile.close();
cout << "--Store AmaProduct, program: " << endl
<< "N,1234,box,123.45,1,1,kg,5" << endl
<< "N,1234,box,123.45,1,1,kg,5" << endl;
cout << "--Store AmaProduct, yours: " << endl;
dumpFile("amaPrd.txt");
cout << "--Load AmaProduct: " << endl;
prdfile.open("amaPrd.txt", ios::in);
prdfile.ignore(2);
tprd.load(prdfile);
cout << "Program: 1234 |box | 139.50| 1|kg | 5|" << endl;
cout << " Yours: " << tprd << endl;
prdfile.clear();
prdfile.close();
}return 0;
}
我不明白为什么我的价格验证失败了。 （“价格验证失败”）。