homework/tree.c

   1 /*
   2  * Compile with:
   3  * gcc tree.c -o tree -Wall -W -Wextra -ansi -pedantic
   4  */
   5
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8
   9 #define LINES 10
  10 #define COLS (2 * LINES)
  11
  12 int main(void)
  13 {
  14     unsigned int i, j;
  15
  16     for (i = 0; i < LINES; i++) {
  17         for (j = 0; j < COLS; j++) {
  18             if ((j < (COLS/2-i)) || (j > (COLS/2+i)))
  19                 printf(" ");
  20             else
  21                 printf("*");
  22         }
  23         printf("\n");
  24     }
  25
  26     return EXIT_SUCCESS;
  27 }