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C++ Programming Code Examples

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restorecrtmode() Function in C++ Programming Language

restorecrtmode() Function in C++
restorecrtmode restores the original video mode detected by initgraph. This function can be used in conjunction with setgraphmode to switch back and forth between text and graphics modes. Textmode should not be used for this purpose; use it only when the screen is in text mode, to change to a different text mode. restorecrtmode is implemented in winbgim, but it does not do any work. This is because both the graphics window and the text window are always open during any Windows program, so there is no need to switch back and forth between the two modes.
Syntax for restorecrtmode() Function in C++
#include <graphics.h> void restorecrtmode(void);
restorecrtmode() restores the original screen mode that existed prior to calling initgraph(). Most often, this represents the text mode. restorecrtmode() and setgraphmode() can be alternately called to switch between text and graphics mode. Function returns nothing.
/* restore the original screen mode that existed prior to calling initgraph() by restorecrtmode() function code example. */ #include <graphics.h> #include <stdlib.h> #include <stdio.h> #include <conio.h> int main(void) { /* request autodetection */ int gdriver = DETECT, gmode, errorcode; int x, y; /* initialize graphics and local variables */ initgraph(&gdriver, &gmode, ""); /* read result of initialization */ errorcode = graphresult(); if (errorcode != grOk) { /* an error occurred */ printf("Graphics error: %s\n", grapherrormsg(errorcode)); printf("Press any key to halt:"); getch(); exit(1); /* terminate with an error code */ } x = getmaxx() / 2; y = getmaxy() / 2; /* output a message */ settextjustify(CENTER_TEXT, CENTER_TEXT); outtextxy(x, y, "Press any key to exit graphics:"); getch(); /* restore system to text mode */ restorecrtmode(); printf("We're now in text mode.\n"); printf("Press any key to return to graphics mode:"); getch(); /* return to graphics mode */ setgraphmode(getgraphmode()); /* output a message */ settextjustify(CENTER_TEXT, CENTER_TEXT); outtextxy(x, y, "We're back in graphics mode."); outtextxy(x, y+textheight("W"), "Press any key to halt:"); /* clean up */ getch(); closegraph(); return 0; }

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C++ code to Implement Vector in STL. Insert element into the vector. Delete last element of the vector. "Size of the vector". Display by index. "Dislplay by iterator". Clear the vector