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#include <stdio.h> /* sprintf */
#include <string.h> /* strcat */

/*
** gotoxy() Implementation in the *nix environment
**
** Note: I've heard the curses library can be useful
** when trying to implement the handy DOS-only tools of
** gotoxy() and clrscr() using move() and initscr().
** Though, there is a way to write your own gotoxy()
** in the Linux environment. This topic isn't discussed
** often, so I'd like to bring a few new ideas to the table.
**
** Concept: We will use two ANSI C standard functions
** to accomplish our task. We will use specific
** string manuvers, according to the man pages, that
** will allow us to execute each part of the program.
*/
void gotoxy(int x, int y) {
char essq[100]; /* String variable to hold the escape sequence */
char xstr[100]; /* Strings to hold the x and y coordinates */
char ystr[100]; /* Escape sequences must be built with characters */

/*
** Convert the screen coordinates to strings
*/
sprintf(xstr, "%d", x);
sprintf(ystr, "%d", y);

/*
** Build the escape sequence (vertical move)
*/
essq[0] = '\0';
strcat(essq, "\033[");
strcat(essq, ystr);

/*
** Described in man terminfo as vpa=\E[%p1%dd
** Vertical position absolute
*/
strcat(essq, "d");

/*
** Horizontal move
** Horizontal position absolute
*/
strcat(essq, "\033[");
strcat(essq, xstr);
/* Described in man terminfo as hpa=\E[%p1%dG */
strcat(essq, "G");

/*
** Execute the escape sequence
** This will move the cursor to x, y
*/
printf("%s", essq);
}