/*----------------------------------------------------------

  Elizabeth Sklar
  Assignment #2
  MC140.0X
  25 September 2000

  This program prints out graphical objects (using ASCII
  graphics), based on input from the user. The user selects
  objects to print from a menu.

----------------------------------------------------------*/

#include <stdio.h>


/*--------------------------------------------------------*/
/* get_option                                             */
/*                                                        */
/* This function prints the menu and gets the user's      */
/* choice of what to do.                                  */
/*                                                        */
/*--------------------------------------------------------*/
char get_option() {

  char tmp[2];

  printf( "R (draw rectangle)\n" );
  printf( "T (draw triangle)\n" );
  printf( "C (draw circle)\n" );
  printf( "H (draw house)\n" );
  printf( "Q (quit)\n" );
  printf( "enter option: " );
  scanf( "%s",tmp );

  return( tmp[0] );

} /* end of get_option() */



/*--------------------------------------------------------*/
/* draw_rectangle                                         */
/*                                                        */
/* This function draws a rectangle. The user is asked to  */
/* specify the height and width of the rectangle.         */
/*                                                        */
/*--------------------------------------------------------*/
void draw_rectangle() {

  int h, w; // height and width of rectangle
  int i, j; // loop counters

  // ask user for dimensions
  printf( "Please enter height of rectangle: " );
  scanf( "%d",&h );
  printf( "Please enter width of rectangle: " );
  scanf( "%d",&w );

  // draw the rectangle
  for ( i=0; i<h; i++ ) {
    for ( j=0; j<w; j++ ) {
      printf( "*" );
    } /* end of for j */
    printf( "\n" );
  } /* end of for i */

} /* end of draw_rectangle() */


/*--------------------------------------------------------*/
/* draw_triangle                                          */
/*                                                        */
/* This function draws a triangle. The user is asked to   */
/* specify the height of the triangle.                    */
/*                                                        */
/*--------------------------------------------------------*/
void draw_triangle() {

  int h;    // height of triangle
  int i, j; // loop counters

  // ask user for dimensions
  printf( "Please enter height of triangle: " );
  scanf( "%d",&h );

  // draw the triangle
  for ( i=0; i<h; i++ ) {
    for ( j=0; j<i+1; j++ ) {
      printf( "*" );
    } /* end of for j */
    printf( "\n" );
  } /* end of for i */

} /* end of draw_triangle() */


/*--------------------------------------------------------*/
/* draw_circle                                            */
/*                                                        */
/* This function draws a circle. The user is asked to     */
/* specify the radius of the circle.                      */
/*                                                        */
/*--------------------------------------------------------*/
void draw_circle() {

  int r;    // radius of circle
  int i, j; // loop counters

  // ask user for dimensions
  printf( "Please enter radius of circle: " );
  scanf( "%d",&r );

  // draw top half of circle
  for ( i=0; i<r; i++ ) {
    for ( j=0; j<r-i; j++ ) {
      printf( " " );
    }
    for ( j=0; j<i+1; j++ ) {
      printf( "*" );
    } /* end of for j */
    for ( j=0; j<i+1; j++ ) {
      printf( "*" );
    } /* end of for j */
    for ( j=0; j<r-i; j++ ) {
      printf( " " );
    }
    printf( "\n" );
  } /* end of for i */

  // draw bottom half of circle
  for ( i=r-1; i>=0; i-- ) {
    for ( j=0; j<r-i; j++ ) {
      printf( " " );
    }
    for ( j=0; j<i+1; j++ ) {
      printf( "*" );
    } /* end of for j */
    for ( j=0; j<i+1; j++ ) {
      printf( "*" );
    } /* end of for j */
    for ( j=0; j<r-i; j++ ) {
      printf( " " );
    }
    printf( "\n" );
  } /* end of for i */

} /* end of draw_circle() */


/*--------------------------------------------------------*/
/* draw_house                                             */
/*                                                        */
/* This function draws a house. The user is asked to      */
/* specify the height of the house.                       */
/*                                                        */
/*--------------------------------------------------------*/
void draw_house() {

  int h, i, j;

  // ask user for dimensions
  printf( "Please enter height of house: " );
  scanf( "%d",&h );

  // draw top of house
  for ( i=0; i<h; i++ ) {
    for ( j=0; j<h-i-1; j++ ) {
      printf( " " );
    }
    printf( "/" );
    for ( j=0; j<i; j++ ) {
      printf( " " );
    } /* end of for j */
    for ( j=0; j<i; j++ ) {
      printf( " " );
    } /* end of for j */
    printf( "\\" );
    for ( j=0; j<h-i-1; j++ ) {
      printf( " " );
    }
    printf( "\n" );
  } /* end of for i */

  for ( j=0; j<h*2; j++ ) {
    printf( "v" );
  }
  printf( "\n" );

  // draw bottom of house
  for ( i=0; i<h-1; i++ ) {
    printf( "|" );
    for ( j=0; j<h*2-2; j++ ) {
      printf( " " );
    }
    printf( "|\n" );
  }
  for ( j=0; j<h*2; j++ ) {
    printf( "m" );
  }
  printf( "\n" );

} /* end of draw_house() */


/*--------------------------------------------------------*/
/* quit                                                   */
/*                                                        */
/* This function displays a goodbye message to the user.  */
/*                                                        */
/*--------------------------------------------------------*/
void quit() {

  printf( "Thanks for playing!\n" );

} /* end of quit() */


/*--------------------------------------------------------*/
/* main program                                           */
/*                                                        */
/*--------------------------------------------------------*/
void main() {

  char option = ' ';

  while ( option != 'Q' ) {
    option = get_option();
    if ( option == 'R' ) {
      draw_rectangle();
    }
    else if ( option == 'T' ) {
      draw_triangle();
    }
    else if ( option == 'C' ) {
      draw_circle();
    }
    else if ( option == 'H' ) {
      draw_house();
    }
    else if ( option != 'Q' ) {
      printf( "Invalid option.\n" );
    }
  } /* end of while */

  quit();

} /* end of main() */