C++高手帮忙下

devilfromheaven · 发表于 28-8-2013 03:08 PM

我的code基本上是可以work了得
但是我要加array去，可以算几个人的BMI在同一时间，和可以选择measure unit （meter，inches）
但是这两个东西我写来写去弄不出来，
谁可以帮帮忙？ TT

#include <iostream>
using namespace std;
void displayMenu()
{
cout << "*-------------------------------------*" << endl;
cout << "| Golden Years Financial Inc. |" << endl;
cout << "|=====================================|" << endl;
cout << "| Select: |" << endl;
cout << "| 1 => Display Data |" << endl;
cout << "| 2 => Insert Data |" << endl;
cout << "|-------------------------------------|" << endl;
cout << "| 3 => Calculate Standard BMI |" << endl;
cout << "| 4 => Clear Data |" << endl;
cout << "|-------------------------------------|" << endl;
cout << "| Q => Quit |" << endl;
cout << "*-------------------------------------*" << endl;
cout << endl;
cout << "Choice: ";
}
void DisplayData( string &name, float &weight, float &height,float &bmi )
{
cout << endl;
cout << "Name = " <<name<< endl;
cout << "Weight = " <<weight<< endl;
cout << "Height = " <<height<< endl;
cout << endl;
}
void InsertData( string &name, float &weight, float &height,float &bmi )
{
cout << endl;
cout<<"Please Enter Your Name\n";
cin >>name;
cout <<"Enter your weight in Kilograms (KG) : ";
cin >> weight;
cout <<"\nEnter your height in Meters (M) : ";
cin >> height;
cout<<"You are now able to calculate your BMI."<<endl;
}
void Calculate( string &name, float &weight, float &height,float &bmi )
{
bmi = weight/(height*height);
cout<<"Your BMI is: "<<bmi<<endl;
if (bmi <= 18.5)
cout << "You are under weight."<<endl;
else if ((bmi > 18.5 ) && (bmi < 25))
cout << "Your weight is in the normal range."<<endl;
else if (bmi >= 25)
cout << "You are overweight."<<endl;
}
void setPrecision ()
{
cout.setf(ios::fixed);
cout.setf(ios::showpoint);
cout.precision(1);
}
void DebugCalculator(string name, float weight, float height)
{
if(name == "null" && weight==0 && height ==0 )
cout<<"Please Insert Your Data Before You Calculate Your BMI Or Your Data is Invalid."<<endl;
}
int main()
{
string name = "null";
float weight = 0 ;
float height = 0;
char choice;
bool invalid = true;
do
{
float bmi;
{
displayMenu();
cin >> choice;
choice = toupper(choice);
switch (choice)
{
case '1' : DisplayData(name, weight, height, bmi);
break;
case '2' : InsertData( name, weight, height, bmi);
break;
case '3' : DebugCalculator(name,weight,height);
setPrecision();
Calculate( name, weight, height, bmi);
break;
case '4' : DisplayData(name="null", weight=0,height=0,bmi);
cout << "Your record have been deleted, please insert your data again." << endl;
break;
case 'Q' : invalid = false;
cout<<"Thanks for using"<<endl;
break;
default : cout << "Invalid selection, try again!" << endl;
}
}
}while(invalid);
cout << "Good bye and have a nice day!" << endl;
cout << endl;
system("PAUSE");
return 0;
}

复制代码

johnng86 · 发表于 1-9-2013 12:51 PM

我以前assignment 写过类似的。。。。还是用pointer 把 data store 在 text file 里。。。。有空的话我就把它找出来给你。。。

devilfromheaven · 发表于 1-9-2013 12:57 PM

johnng86 发表于 1-9-2013 12:51 PM
我以前assignment 写过类似的。。。。还是用pointer 把 data store 在 text file 里。。。。有空的 ...

感谢你！！

johnng86 · 发表于 2-9-2013 03:41 PM

反正收着也没什么用，你就拿去自己慢慢研究吧

#include<iostream>
#include <string>
#include <cstdlib>
#include <fstream>
#include <iomanip>
using namespace std;
int i=0;
#define p_ause system("pause")
//declare the "pause" system
struct component
{
string code;
string name;
double cost;
int qty;
double s_price;
}product[100];
void enter_data(int,int);
void main_menu();//show all the commands
void check_dgt(string*,double&);//check value is digit number or not
void data();
void new_data();
void exit();
void edit();
void disp_all();
void del();
void data_shifting(int);
//Add Two new function.=)
void disp_selection();
void disp_1_data();
void store_data();
int main()
{
data();
// disp_all();
string c;
int a=2;
cout<<endl<<endl;
//Print the title
cout<<setw(20)<<" "<<setfill('=')<<setw(38)<<""<<setfill(' ')<<endl<<endl;
cout<<setw(20)<<""<<"====Universiti Tunku abdul Rahman====="<<endl<<endl;
cout<<setw(20)<<""<<"=========Programming Techniques=======\n\n";
cout<<setw(20)<<" "<<setfill('=')<<setw(38)<<""<<setfill(' ')<<endl<<endl;
while(1)
{
cout<<setw(15)<<""<<"\nAre You Want To Enter Command Mode?(Y/N): ";
cin>>c;
//ask user enter yes ot not
if (c=="y" || c=="Y")main_menu();
else if (c=="n" || c=="N") exit();
else cout<<setw(20)<<""<<"\aPlease enter Y or N correctly!"<<endl;
}
return 0;
}
void main_menu()
{
//declare the variable
double n;
string cmd;
//using whlie() statement to continue run the program
while(1)
{
//print the menu
system("CLS");//Clear the previous output screen
cout<<endl<<endl;
cout<<setw(15)<<" "<<setfill('_')<<setw(55)<<" "<<setfill(' ')<<endl<<endl;
cout<<setw(15)<<""<<"The Command available is below:"<<endl;
cout<<setw(15)<<" "<<setfill('_')<<setw(55)<<" "<<setfill(' ')<<endl<<endl;
cout<<setw(15)<<""<<"(1) New( Add new item )"<<endl;
cout<<setw(15)<<""<<"(2) Edit( Specify an etem and edit it )"<<endl;
cout<<setw(15)<<""<<"(3) Delete( Specify an etem and delete it )"<<endl;
cout<<setw(15)<<""<<"(4) Display( Display a specify an item and delete it )"<<endl;
cout<<setw(15)<<""<<"(5) Exit( Quite the program )"<<endl;
cout<<setw(15)<<" "<<setfill('_')<<setw(55)<<" "<<setfill(' ')<<endl<<endl;
loop_m:
cout<<setw(15)<<""<<"Select Your Command: ";
cin>>cmd;
;
//pass the memory address to chr
check_dgt(&cmd,n);
n=int(n);
//check chr is digit or not, and assign the value to n
if (n!=-1)
{
if(n==1) new_data();
else if (n==2)edit();
else if (n==3){del();}
else if (n==4)disp_selection();
else if (n==5)exit();
}
else goto loop_m;//go back to loo_m
}
}
void check_dgt(string *s,double& n)
{
char c[20];
char * cstr;
for(int i=0;i<s->length();i++)
{
if(isdigit(s->at(i)) || s->at(i)=='.')
{
cstr = new char [s->size()+1];
strcpy (cstr, s->c_str());
n=atof(cstr);
}
else if(isalpha(s->at(i)))
{
//if 's' is alphabet, then return n=-1;
cout<<setw(15)<<""<<"Please don't enter alphabet!"<<endl;
n=-1;
return;
}
else
{
cout<<setw(15)<<""<<"Please enter correctly command!"<<endl;
n=-1;
return;
}
}
}
void data()
{
string s;
ifstream infile("Data.txt");
//get all the datas from the texr.txt files
if(infile.is_open())
{
while(!infile.eof())
{
//store the datas
getline(infile,product[i].name,'$');
infile>>product[i].code;
infile>>product[i].cost;
infile>>product[i].qty;
infile>>product[i].s_price;
getline(infile,s);
i++;
}
}
else
cout<<"Error opening file!"<<endl;
infile.close();
}
void new_data()
{
string c;
int update=0;
system("CLS");//Clear the previous output screen
cout<<endl<<endl;
cout<<setw(30)<<" "<<setfill('=')<<setw(21)<<" "<<setfill(' ')<<endl;
cout<<setw(30)<<""<<"====Add New Data===="<<endl;
cout<<setw(30)<<" "<<setfill('=')<<setw(21)<<" "<<setfill(' ')<<endl;
while(i<100)
{
fflush(stdin);
enter_data(update,i);
i++;//incerment the i by 1 for next data
loop_new2:
cout<<setw(15)<<""<<"Are you want to continue add data?(Y/N): ";
cin>>c;
if (c=="y" || c=="Y")continue;
else if (c=="n" || c=="N")return;
else
{
cout<<setw(15)<<""<<"\aPlease enter Y or N correctly!\n"<<endl;
goto loop_new2;
}
}
}
void exit()
{
system("cls");
cout<<endl<<endl;
cout<<setw(25)<<" "<<setfill('*')<<setw(34)<<" "<<setfill(' ')<<endl;
cout<<setw(25)<<""<<"* Thanks For Using This Program *"<<endl;
cout<<setw(25)<<" "<<setfill('*')<<setw(34)<<" "<<setfill(' ')<<endl;
exit(1);
}
void edit()
{
double n;
int j,choose,update;
string name,type_edit,cmd,s;
update=1;
system("CLS");//Clear the previous output screen
cout<<endl<<endl;
cout<<setw(30)<<" "<<setfill('=')<<setw(21)<<" "<<setfill(' ')<<endl;
cout<<setw(30)<<""<<"=====Edit Data====="<<endl;
cout<<setw(30)<<" "<<setfill('=')<<setw(21)<<" "<<setfill(' ')<<endl;
loop_edit1:
cout<<setw(15)<<"Enter the component name: ";
fflush(stdin);
getline(cin,name,'\n');
for(j=0;j<100;j++)
{
if(product[j].name==name)
{
cout<<setw(15)<<""<<"The \'"<<name<<"\' is FOUND."<<endl;
cout<<setw(15)<<""<<"Component details:"<<endl;
cout<<setfill('_')<<setw(72)<<" "<<setfill(' ')<<endl;
//cout<<left<<setw(25)<<"Name"<<setw(10)<<"Code"<<setw(10)<<"Cost"<<setw(10)<<"Quantity"<<setw(10)<<"Selling Price"<<endl;
cout<<left<<setw(25)<<"(1)Name"<<setw(10)<<"(2)Code"<<setw(10)<<"(3)Cost"<<setw(15)<<"(4)Quantity"
<<setw(15)<<"(5)Selling Price"<<endl;
cout<<setfill('_')<<setw(72)<<" "<<setfill(' ')<<endl;
cout<<left<<setw(25)<<product[j].name<<setw(10)<<fixed<<setw(10)<<product[j].code
<<setprecision(2)<<setw(10)<<product[j].cost <<setprecision(0)<<setw(15)<<product[j].qty <<setw(10)<<setprecision(2)
<<product[j].s_price <<endl;
cout<<setfill('_')<<setw(72)<<" "<<setfill(' ')<<endl;
cout<<endl;
while(1)
{
cout<<setw(15)<<"Which part of element you want edit?(6 for all part // 0 to exit): ";
cin>>cmd;
check_dgt(&cmd,n);
choose=int(n);
if(choose==1)
{
fflush(stdin);
cout<<setw(15)<<""<<"Name:";
getline(cin,type_edit,'\n');
product[j].name =type_edit;
}
else if(choose==2)
{
fflush(stdin);
cout<<setw(15)<<""<<"Code:";
getline(cin,type_edit,'\n');
product[j].code=type_edit;
}
else if(choose==3)
{
loop_cost:
cout<<setw(15)<<""<<"Cost:";
cin>>s;
check_dgt(&s,n);
if(n!=-1)
product[j].cost=n;
else
goto loop_cost;
}
else if(choose==4)
{
loop_qty:
cout<<setw(15)<<""<<"Quantity:";
cin>>s;
check_dgt(&s,n);
if (n!=-1)
product[j].qty =int(n);
else
goto loop_qty;
}
else if(choose==5)
{
loop_price:
cout<<setw(15)<<""<<"Selling Price:";
cin>>s;
check_dgt(&s,n);
if (n!=-1)
product[j].s_price =n;
else
goto loop_price;
}
else if (choose==6)
{
fflush(stdin);
enter_data(update,j);
}
else if(choose==0)goto outside;
else cout<<"Please enter correctly!"<<endl;
};
}
}
outside:
if(j==100)
{
cout<<setw(15)<<""<<"The \'"<<name<<"\' no found."<<endl;
}
loop_edit2:
cout<<setw(15)<<""<<"Are you want to continue edit next element?(Y/N): ";
cin>>cmd;
if (cmd=="y" || cmd=="Y") goto loop_edit1;
else if (cmd=="n" || cmd=="N")
{
store_data();
return;
}
else
{
cout<<setw(15)<<""<<"\aPlease enter Y or N correctly!\n"<<endl;
goto loop_edit2;
}
}
void enter_data(int update,int j)
{
//store the data from user
string code,name,s;
double n;
component* p=new component;
cout<<"Number ("<<i<<"): "<<endl;
cout<<setw(15)<<""<<"Code: ";
getline(cin,code,'\n');
cout<<setw(15)<<""<<"Name: ";
getline(cin,name,'\n');
loop_cost:
cout<<setw(15)<<""<<"Cost: ";
cin>>s;
check_dgt(&s,n);
if (n!=-1)
{
p->cost =n;
}
else
goto loop_cost;
loop_qty:
cout<<setw(15)<<""<<"Quantity: ";
cin>>s;
check_dgt(&s,n);
if (n!=-1)
{
p->qty =int(n);
}
else
goto loop_qty;
loop_price:
cout<<setw(15)<<""<<"Selling Price: ";
cin>>s;
check_dgt(&s,n);
if (n!=-1)
{
p->s_price =n;
}
else
goto loop_price;
//store the data
p->name =name;
p->code =code;
if(update==0)
{
p->name +="$";
ofstream fileout("Data.txt",ios::out|ios::ate|ios::app);
if(fileout.is_open ())
{
fileout<<left<<setw(25)<<p->name<<setw(10)<<fixed<<setprecision(2)<<setw(10)<<p->code
<<setw(10)<<p->cost<<setprecision(0)<<setw(10)<<p->qty<<setw(10)<<setprecision(2)
<<p->s_price <<endl;
fileout.close();
}
else cout<<"Error opening file"<<endl;
}
else if(update==1)
{
product[j].name =p->name;
product[j].code =p->code ;
product[j].cost =p->cost ;
product[j].qty =p->qty ;
product[j].s_price =p->s_price ;
store_data();
}
delete p;
}
void disp_selection()
{
double n;
string cmd;
loop_dis0:
system("CLS");//Clear the previous output screen
cout<<endl<<endl;
cout<<setw(30)<<" "<<setfill('=')<<setw(21)<<" "<<setfill(' ')<<endl;
cout<<setw(30)<<""<<"====Display Datas==="<<endl;
cout<<setw(30)<<" "<<setfill('=')<<setw(21)<<" "<<setfill(' ')<<endl;
cout<<setw(15)<<""<<"1) Display One Data."<<endl;
cout<<setw(15)<<""<<"2) Display All The Datas."<<endl;
cout<<setw(15)<<""<<"3) Exit To Command Mode."<<endl;
loop_dis1:
cout<<setw(15)<<""<<"Select Your Command: ";
cin>>cmd;
cout<<endl;
//pass the memory address to chr
check_dgt(&cmd, n);
//check chr is digit or not, and assign the value to n
if (n!=-1)
{
if (n==1)
{
disp_1_data();
}
else if (n==2) disp_all();
else if (n==3) return;
else goto loop_dis1;//go back to loo_m
}
else goto loop_dis1;//go back to loo_m
goto loop_dis0;
//*************************************************************
}
void disp_1_data()
{
component* pp=product;
string s,code,cost,price,qty;
double n;
int j,choose;
string name,type_edit,c;
//control all the output position
cout.setf(ios::fixed);
cout.setf(ios::left);
loop_dis1:
cout<<setw(15)<<"Enter the component name: ";
fflush(stdin);
getline(cin,name);
ifstream filein("Data.txt");
if(filein.is_open())
{
j=0;
while(!filein.eof())
{
fflush(stdin);
getline(filein,(pp+j)->name ,'$');
filein>>(pp+j)->code;
filein>>(pp+j)->cost;
filein>>(pp+j)->qty;
filein>>(pp+j)->s_price;
if(name==((pp+j)->name.substr(0,name.length())))
{
cout<<setw(15)<<""<<"The \'"<<name<<"\' is FOUND."<<endl;
cout<<setw(13)<<" "<<setfill('_')<<setw(30)<<" "<<setfill(' ')<<endl;
cout<<setw(15)<<""<<"Component details:"<<endl;
cout<<setw(13)<<" "<<setfill('_')<<setw(30)<<" "<<setfill(' ')<<endl;
cout<<setw(15)<<""<<setw(15)<<"Code"<<setw(10)<<(pp+j)->code<<endl;
cout<<setw(15)<<""<<setw(15)<<"Name"<<setw(10)<<(pp+j)->name<<endl;
cout<<setw(15)<<""<<setw(15)<<"Cost"<<"RM"<<setprecision(2)<<setw(10)<<(pp+j)->cost<<endl;
cout<<setw(15)<<""<<setw(15)<<"Quantity"<<setw(10)<<(pp+j)->qty<<endl;
cout<<setw(15)<<""<<setw(15)<<"Selling"<<"RM"<<setprecision(2)<<setw(10)<<(pp+j)->s_price<<endl;
cout<<setw(13)<<" "<<setfill('_')<<setw(30)<<" "<<setfill(' ')<<endl;
cout<<endl<<endl;
break;
}
getline(filein,c,'\n');
j++;
}
}
if(filein.eof())
{
cout<<setw(15)<<""<<"The \'"<<name<<"\' no found."<<endl;
}
loop_dis2:
cout<<setw(15)<<""<<"Are you want to continue check other elements?(Y/N): ";
cin>>c;
if (c=="y" || c=="Y") goto loop_dis1;
else if (c=="n" || c=="N")return;
else
{
cout<<setw(15)<<""<<"\aPlease enter Y or N correctly!\n"<<endl;
goto loop_dis2;
}
filein.close();
}
void disp_all()
{
int j=0;
string s;
component* p=new component[100];
ifstream filein("Data.txt");
if(filein.is_open())
{
while(!filein.eof())
{
getline(filein,(p+j)->name,'$');
filein>>(p+j)->code ;
filein>>(p+j)->cost ;
filein>>(p+j)->qty ;
filein>>(p+j)->s_price ;
getline(filein,s,'\n');
j++;
}
}
else cout<<"Error file opening"<<endl;
filein.close();
j--;
system("CLS");//Clear the previous output screen
cout<<right<<setfill('_')<<setw(70)<<" "<<setfill(' ')<<endl;
cout<<left<<setw(25)<<"Name"<<setw(10)<<"Code"<<setw(10)<<"Cost"<<setw(10)<<"Quantity"<<setw(10)<<"Selling Price"<<endl;
cout<<right<<setfill('_')<<setw(70)<<" "<<setfill(' ')<<endl;
for(int k=0;k<j;k++)
{
cout<<left<<setw(25)<<(p+k)->name <<setw(10)<<fixed<<setprecision(2)
<<setw(10)<<(p+k)->code<<"RM" <<setw(10)<<(p+k)->cost <<setprecision(0)
<<setw(10)<<(p+k)->qty <<"RM"<<setw(10)<<setprecision(2)
<<(p+k)->s_price <<endl;
}
cout<<right<<setfill('_')<<setw(70)<<" "<<setfill(' ')<<endl;
delete []p;
p_ause;
}
void del()
{
string cmd;
int j;
string name;
system("CLS");//Clear the previous output screen
cout<<endl<<endl;
cout<<setw(30)<<" "<<setfill('=')<<setw(21)<<" "<<setfill(' ')<<endl;
cout<<setw(30)<<""<<"====Delete Data===="<<endl;
cout<<setw(30)<<" "<<setfill('=')<<setw(21)<<" "<<setfill(' ')<<endl;
loop_del1:
cout<<setw(15)<<""<<"Enter the component name: ";
//****************************************
fflush(stdin);
getline(cin,name);
for(j=0;j<100;j++)
{
//search the component name
if(product[j].name==name)
{
cout<<setw(15)<<""<<"The \'"<<name<<"\' is FOUND."<<endl;
loop_del3:
cout<<"Are you sure you want to delete this component in data(Y/N): ";
cin>>cmd;
if (cmd=="y" || cmd=="Y")
{
data_shifting(j);
break;
}
else if (cmd=="n" || cmd=="N")break;
else
{
cout<<setw(15)<<""<<"\aPlease enter Y or N correctly!\n"<<endl;
goto loop_del3;
}
}
}
if(j==100)
{
cout<<setw(15)<<""<<"The \'"<<name<<"\' no found."<<endl;
}
loop_del2:
cout<<setw(15)<<""<<"Are you want to continue delete other data?(Y/N): ";
cin>>cmd;
if (cmd=="y" || cmd=="Y") goto loop_del1;
else if (cmd=="n" || cmd=="N")return;
else
{
cout<<setw(15)<<""<<"\aPlease enter Y or N correctly!\n"<<endl;
goto loop_del2;
}
}
void data_shifting(int s)
{
for(int j=s;j<i;j++)
{
//Shift the data after user deleted it
product[j].code=product[j+1].code;
product[j].cost=product[j+1].cost;
product[j].name =product[j+1].name;
product[j].qty =product[j+1].qty;
product[j].s_price =product[j+1].s_price;
}::i--;//"i" decrease 1 after deleted 1 data
store_data();
}
void store_data()
{
string name;
ofstream outfile("Data.txt");
if(outfile.is_open())
{
for(int k=0;k<i-1;k++)
{
//add '$' to every 'name' at the end
//this can easily use the getline function to get the full name of the component from text.txt file
name=product[k].name+"$";
outfile<<left<<setw(25)<<name<<setw(10)<<fixed<<setw(10)<<product[k].code
<<setprecision(2)<<setw(10)<<product[k].cost <<setprecision(0)<<setw(10)<<product[k].qty <<setw(10)<<setprecision(2)
<<product[k].s_price <<endl;
}
}
else cout<<"Error opening file"<<endl;//if opening file have any problem will perform this
outfile.close();
}

复制代码

本帖最后由 johnng86 于 2-9-2013 03:47 PM 编辑

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