How to convert isbn 13 to isbn 10?

Need help with C++ program please help!?

• I'm having problems with this program, if you run it more than one time the hst total is way wrong! Can someone please help me? The ISBN numbers to test with are 11110, 12221, 13332, 24443, 25554. #include <iostream> #include <process.h> #include <iomanip> #include <conio.h> #include <string> #include <stdio.h> #include <ctype.h> #include <windows.h> using namespace std; void gotoxy(int x, int y) { COORD coord; coord.X = x; //column coordinate coord.Y = y; //row coordinate SetConsoleCursorPosition(GetStdHandle(… coord); } void clrscr(int x, int y) { COORD coordScreen = { x, y }; DWORD cCharsWritten; CONSOLE_SCREEN_BUFFER_INFO csbi; DWORD dwConSize; HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE); GetConsoleScreenBufferInfo(hConsole, &csbi); dwConSize = csbi.dwSize.X * csbi.dwSize.Y; FillConsoleOutputCharacter(hConsole, TEXT(' '), dwConSize, coordScreen, &cCharsWritten); GetConsoleScreenBufferInfo(hConsole, &csbi); FillConsoleOutputAttribute(hConsole, csbi.wAttributes, dwConSize, coordScreen, &cCharsWritten); SetConsoleCursorPosition(hConsole, coordScreen); } int main() { int i, qty, y; float retail[5] = {155.95, 116.75, 126.50, 125.75, 138.99}, total, pretotal, tax, aftertotal; string book_title[5] = {"Binary Kibbles and Bits", "Underwater Googles", "Vitamin C++", "Surf and Turf the Web", "Java-lin: Olympic Favourite"}, isbn[5] = {"11110", "12221", "13332", "24443", "25554"}, isbn_num = "0"; bool valid=true; char runagain='y'; while(runagain=='y') { clrscr(0,0); runagain='y'; total=0; pretaxtotal=0; aftertotal=0; qty=0; tax=.13; y=3; valid=true; gotoxy(5,2); cout << "ISBN"; gotoxy(12,2); cout << "Title"; gotoxy(40,2); cout << "Price"; gotoxy(50,2); cout << "Qty"; gotoxy(57,2); cout << "Total"; cout << fixed; cout.precision(2); do { isbn_num="0"; gotoxy(5,y); cin >> isbn_num; for(i=0;i<5;i++) { if(isbn_num==isbn[i]) { gotoxy(12,y); cout << book_title[i]; gotoxy(40,y); cout << "$"<<retail[i]<<""; gotoxy(50,y); cin >> qty; total=retail[i]*qty; pretaxtotal=pretotal+total; gotoxy(57,y); cout << "$"<<total<<""; y++; i=0; runagain = getch(); if(runagain=='t') { valid=false; break; } valid=true; break; } } if(i==5) { clrscr(5,y); gotoxy(12,y); cout << "Invalid ISBN"; continue; } if(y>7) { valid=false; break; } while(valid==true) { tax=hst*pretaxtotal; aftertotal=tax+prepretaxtotal; gotoxy(40,y+5); cout << "PreTax Total"; gotoxy(57,y+5); cout << "$"<<pretaxtotal<<endl; gotoxy(40,y+6); cout << "Hst(13%)"; gotoxy(57,y+6); cout <<"$"<< hst<<endl; gotoxy(40,y+7); cout << "After Tax Total"; gotoxy(57,y+7); cout << "$"<<aftertotal<<endl; gotoxy(5,y+10); cout << "Would you like to enter another purchase? (y/n) "; cin >> runagain; } return(0); }

• Answer:

  Just clear up some codes.... Good luck!