prototype.c

   1 #include <stdio.h>
   2
   3 #define COLS 80
   4 #define ROWS 25
   5
   6 #define DEAD ' '
   7 #define ALIVE '#'
   8
   9 #define STR(x) _STR(x)
  10 #define _STR(x) #x
  11
  12 char grid[COLS * ROWS] = { [0 ... (COLS*ROWS-1)] = ALIVE };
  13
  14 static void print_row(char row[COLS]) {
  15   printf("%." STR(COLS) "s\n", row);
  16 }
  17
  18 static void print_grid(char grid[COLS * ROWS]) {
  19   for (int i = 0; i < ROWS; i++)
  20     print_row(grid + i * COLS);
  21 }
  22
  23 static void clearscr() {
  24   printf("\e[1;1H\e[2J");
  25 }
  26
  27 int main () {
  28   clearscr();
  29   print_grid(grid);
  30
  31   return 0;
  32 }