我有，據我可以告訴我所做的一切都是正確命名空間定義和異常
下面是我的代碼，並建立輸出定義一個命名空間
一些麻煩
FlashDrive.h
#ifndef FLASHDRIVE_H
#define FLASHDRIVE_H
#include <iostream>
#include <cstdlib>
namespace cs52 {
class FlashDrive {
friend FlashDrive operator+ (FlashDrive used1 , FlashDrive used2);
friend FlashDrive operator- (FlashDrive used3, FlashDrive used4);
public:
FlashDrive& FlashDrive::operator=(int);
FlashDrive::FlashDrive(int);
FlashDrive& operator = (const FlashDrive& usedtotal){
my_StorageUsed= usedtotal.my_StorageUsed;
return *this;
}
FlashDrive();
FlashDrive(int capacity, int used, bool pluggedIn);
void plugIn();
void pullOut();
void writeData(int amount);
void eraseData(int amount);
void formatDrive();
int getCapacity();
void setCapacity(int amount);
int getUsed();
void setUsed(int amount);
bool isPluggedIn();
private:
int my_StorageCapacity; // in kilobytes
int my_StorageUsed; // in kilobytes
bool my_IsPluggedIn; // am I attached to a computer?
}extern drive1,drive2;
inline FlashDrive operator+ (FlashDrive used1, FlashDrive used2) {
FlashDrive plus;
plus.my_StorageUsed = (used1.getUsed()+ used2.getUsed());
return plus;
}
inline bool operator< (FlashDrive &lhs,FlashDrive &rhs) {
return (lhs.getUsed() < rhs.getUsed());
}
inline bool operator> (FlashDrive &lhs,FlashDrive &rhs) {
return (operator <(rhs, lhs));
}
inline FlashDrive operator - (FlashDrive used3, FlashDrive used4){
FlashDrive minus;
minus.my_StorageUsed = (used3.getUsed()- used4.getUsed());
return minus;
};
}
#endif
FlashDrive.cpp
#include <iostream>
#include <cstdlib>
#include "FlashDrive.h"
namespace cs52 {
FlashDrive::FlashDrive() {
my_StorageCapacity = 0;
my_StorageUsed = 0;
my_IsPluggedIn = false;
}
FlashDrive::FlashDrive(int capacity, int used, bool pluggedIn) {
my_StorageCapacity = capacity;
my_StorageUsed = used;
my_IsPluggedIn = pluggedIn;
}
void FlashDrive::plugIn() {
my_IsPluggedIn = true;
}
void FlashDrive::pullOut() {
my_IsPluggedIn = false;
}
void FlashDrive::writeData(int amount) {
my_StorageUsed += amount;
}
void FlashDrive::eraseData(int amount) {
my_StorageUsed -= amount;
}
void FlashDrive::formatDrive() {
my_StorageUsed = 0;
}
int FlashDrive::getCapacity() {
return(my_StorageCapacity);
}
void FlashDrive::setCapacity(int amount) {
my_StorageCapacity = amount;
}
int FlashDrive::getUsed() {
return(my_StorageUsed);
}
void FlashDrive::setUsed(int amount) {
my_StorageUsed = amount;
}
bool FlashDrive::isPluggedIn() {
return(my_IsPluggedIn);
}
}
Main.cpp的
#include <iostream>
#include <cstdlib>
#include "FlashDrive.h"
void main()
{
using namespace cs52;
cs52::FlashDrive empty;
cs52::FlashDrive drive1(10, 0, false);
cs52::FlashDrive drive2(20, 0, false);
drive1.plugIn();
drive1.formatDrive();
drive1.writeData(5);
drive1.pullOut();
drive2.plugIn();
drive2.formatDrive();
drive2.writeData(1);
drive2.pullOut();
// read in a FlashDrive...
// the class designer for FlashDrive (that's you!)
// gets to decide which fields matter and should be read in
cs52::FlashDrive sample;
cin >> sample;
// print out a FlashDrive...
// the class designer for FlashDrive (that's you!)
// gets to decide which fields matter and should be printed
cout << sample << endl;
cs52::FlashDrive combined = drive1 + drive2;
cout << "this drive's filled to " << combined.getUsed() << endl;
cs52::FlashDrive other = combined – drive1;
cout << "the other cup's filled to " << other.getUsed() << endl;
if (combined > other) {
cout << "looks like combined is bigger..." << endl;
}
else {
cout << "looks like other is bigger..." << endl;
}
if (drive2 > other) {
cout << "looks like drive2 is bigger..." << endl;
}
else {
cout << "looks like other is bigger..." << endl;
}
if (drive2 < drive1) {
cout << "looks like drive2 is smaller..." << endl;
}
else {
cout << "looks like drive1 is smaller..." << endl;
}
// let's throw some exceptions...
try {
empty = empty - combined;
cout << "something not right here..." << endl;
} catch(std::logic_error) {
// an exception should get thrown...
// so the lines of code here should
// be run, not the cout statement...
}
try {
drive2.writeData(10000);
cout << "something not right here..." << endl;
} catch(std::logic_error) {
// an exception should get thrown...
// so the lines of code here should
// be run, not the cout statement...
}
try {
cs52::FlashDrive f(-1, -1, false);
cout << "something not right here..." << endl;
} catch(std::logic_error) {
// an exception should get thrown...
// so the lines of code here should
// be run, not the cout statement...
}
}
這裏是構建錯誤 大部分是多餘的
------構建開始：項目：FlashDriver，配置：調試Win32 ------ Build開始7/29/2013 4:32:24 AM。 InitializeBuildStatus：觸摸「Debug \ FlashDriver.unsuccessfulbuild」。 ClCompile：Main.cpp c：\ documents and settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（25）：error C2065：'cin' ：未聲明的標識符c：\ documents and settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（30）：error C2065： 'cout'：未聲明的標識符c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（30）：error C2065： 'endl'：未聲明的標識符c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（33）：錯誤C2065： 'cout'：未聲明的標識符c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（33）：error C2065： 'endl'：未聲明的標識符c： \ Documents and settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（35）：error C2146： 語法錯誤：缺少';'之前標識符' - 'c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（35）：error C2065：' - '： 未聲明的標識符c：\ documents和設置\管理員\我的 文檔\ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（35）：錯誤C2146： 語法錯誤：缺少';'之前標識符'drive1'c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（36）：error C2065： 'cout'：未聲明的標識符c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（36）：error C2065： 'endl'：未聲明的標識符c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main。cpp（39）：error C2065： 'cout'：未聲明的標識符c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（39）：error C2065： 'endl'：未聲明的標識符c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（42）：error C2065： 'cout'：未聲明的標識符c：\文件和 settings \ administrator \我的文檔\ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（42）：error C2065： 'endl'：未聲明的標識符c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ pr ojects \ flashdriver \ flashdriver \ main.cpp（46）：error C2065： 'cout'：未聲明的標識符c：\ documents和 settings \ administrator \我的文檔\ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp （46）：error C2065： 'endl'：未聲明的標識符c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（49）：error C2065： ' COUT：未聲明的標識符C：\文件和設置 \管理員\我的文檔\ Visual Studio的 2010 \項目\ flashdriver \ flashdriver \ main.cpp中（49）：錯誤C2065： 'ENDL'：未聲明的標識符C：\文件和 設置\管理員\我的文檔\視覺工作室 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（53）：error C2065： 'cout'：未聲明的標識符c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（53）：error C2065： 'endl'：未聲明的標識符c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（56）：error C2065 ： 'cout'：未聲明的標識符c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（56）：error C2065： 'endl'：未聲明的標識符c ：\ documents和 settings \ administ rator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（62）：error C2146： 語法錯誤：缺少';'之前標識符' - 'c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（62）：error C2065：' - '： 未聲明的標識符c：\ documents and settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（62）：error C2146： 語法錯誤：缺少';'在標識符'combined'之前c：\ documents 和settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（63）：error C2065： 'cout'：未聲明的標識符c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（63）：error C2065： 'endl'：未聲明的標識符c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（72）：error C2065： 'cout'：未聲明的標識符c：\ documents和 settings \ administrator \我的文檔\ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（72）：錯誤C2065 ： 'endl'：未聲明的標識符c：\ documents和 settings \ administrator \我的文檔\ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main。cpp（81）：error C2065： 'cout'：未聲明的標識符c：\ documents和 settings \ administrator \ my documents \ visual studio 2010 \ projects \ flashdriver \ flashdriver \ main.cpp（81）：error C2065： 'endl'：未聲明的標識符FlashDrive.cpp生成代碼...
構建失敗。
時間經過00：00：02.50 ==========構建：0成功，1失敗，0最新，0跳過==========
使用'的std :: cin'等 – lapk
或寫'使用命名空間std'在乞討他們的資格的文件... –
你需要'std :: cout'，'std :: cin'和'std :: endl'而不是'cout'，'cin'和'endl'。 – juanchopanza