saving a 2D array to a file c++ -

-

i trying save 2d array file, showing "^l". if user enters y or y, program supposed end, printing 2d array instead. 

//allow user quit cout << "would quit game? enter y or n: " << endl; cin >> choice; if (choice == 'y' || choice == 'y') {    ofstream outfile("map.txt");    (int row = 0; row < rows; row++)    {        (int col = 0; col < cols; col++)          outfile << "here map! " << map[rows][cols] << endl;    }    outfile.close(); }  if (choice == 'n' || choice == 'n') {     // add code play game     playturn(treasurer, treasurec, row, col, nummoves); } // print map true printmap(map,true, treasurer, treasurec, startr, startc, row, col);  //end game cout << "you finished game in  " << nummoves <<" moves.\n";

can serialize map stream. stream can specified you. std::cout or std::fstream can work..

#include <iostream> #include <fstream>  template<typename t, int height, int width> std::ostream& writemap(std::ostream& os, t (&map)[height][width]) {     (int = 0; < height; ++i)     {         (int j = 0; j < width; ++j)         {             os << map[i][j]<<" ";         }         os<<"\n";     }     return os; }  int main() {     const int width = 4;     const int height = 5;      int map[height][width] =     {         {1, 2, 3, 4},         {5, 6, 7, 8},         {9, 10, 11, 12},         {13, 14, 15, 16},         {17, 18, 19, 20}     };      std::fstream of("map.txt", std::ios::out | std::ios::app);      if (of.is_open())     {         writemap(of, map);         writemap(std::cout, map);         of.close();     } }

the above write map file screen..

the result be:

1 2 3 4  5 6 7 8  9 10 11 12  13 14 15 16  17 18 19 20

Comments

Post a Comment

Popular posts from this blog

c# - Unity IoC Lifetime per HttpRequest for UserStore -

-
i'm trying clean default implementation of accountcontroller.cs comes out of box in new mvc5/owin security implementation. have modified constructor this: private usermanager<applicationuser> usermanager; public accountcontroller(usermanager<applicationuser> usermanager) { this.usermanager = usermanager; } also, have created lifetime manager unity looks this: public class httpcontextlifetimemanager<t> : lifetimemanager, idisposable { private httpcontextbase _context = null; public httpcontextlifetimemanager() { _context = new httpcontextwrapper(httpcontext.current); } public httpcontextlifetimemanager(httpcontextbase context) { if (context == null) throw new argumentnullexception("context"); _context = context; } public void dispose() { this.removevalue(); } public override object get...
Read more

Change the color of an oval at click in Java AWT -

-
i have draw ovals in java, , @ click change color. beginning tried change color after 20 ms, doesn't work. my code is: public class mycomponentnew extends frame { public graphics2d g2d; public mycomponentnew(string title) { super(title); setsize(400, 550); } @override public void paint(graphics g) { this.g2d = (graphics2d) g; this.g2d.setcolor(color.red); this.g2d.filloval(10, 55, 50, 100); } public void changecolor () { this.g2d.setcolor(color.blue); this.g2d.filloval(10, 55, 50, 100); } } and in class main method have: mycomponentnew m; m = new mycomponentnew("fereastra cu baloane"); m.setvisible(true); m.addwindowlistener(new windowadapter() { @override public void windowclosing(windowevent we) { system.exit(0); } }); try { thread.sleep(20); } catch(interruptedexception e) {} m.changecolor(); the color of oval remains red. ...
Read more

I am trying to solve the error message 'incompatible ranks 0 and 1 in assignment' in a fortran 95 program. -

-
i writing program in fortran find velocity of parachuting person in relation time. keep getting error can't fix. new programming , appreciated. the error is v(i+1)=v(i)+[32-((c*v(i)*v(i))/m)]*(h) 1 error: incompatible ranks 0 , 1 in assignment @ (1) and program is program para integer :: real :: v(11) !velocity real :: q !initial velocity real :: h !time step real :: c !drag coefficient real :: m !mass ! gravity equal 32 ft/s^2 write (*,*)'enter time step' read(*,*)h write(*,*)'enter initial velocity' read(*,*)q write(*,*)'enter drag coefficient' read(*,*)c write(*,*)'enter mass' read(*,*)m i=1,10 ! 1 10, 1 being interval. end v(i+1)=v(i)+[32-((c*v(i)*v(i))/m)]*(h) q=v(1) end program you cannot use [] normal parenthesis in expressions. array constructor, [ items ] means array items elements. end do should after line.
Read more