HW18
COP-3223H

See HW7's Setup for how to prepare for performing and submitting your homework.

1. (hw18-1.c) Replace the while loops (except while (1)) in the following bounce animation with for loops using the idiom(s) shown in class.

   #include <stdio.h>
   #include <unistd.h>
   
   int main(int argc, char **argv) {
     int width = 40;
     int height = 20;
     int x = 1;
     int y = 1;
     int dx = 1;
     int dy = 1;
     while (1) {
       printf("\033[2J");
       printf("\033[H");
       int j = 1;
       while(j <= height) {
         int i = 1;
         while (i <= width) {
           if ((i == x) && (j == y)) {
             putchar('o');
           } else {
             putchar(' ');
           }
           i++;
         }
         putchar('|');
         putchar('\n');
         j++;
       }
       for (int i = 0; i < width; i++) {
         putchar('^');
       }
       putchar('\n');
       if ((1 <= (x + dx)) && ((x + dx) <= width)) {
         dx = dx;
       } else {
         dx = dx * -1;
       }
       if ((1 <= (y + dy)) && ((y + dy) <= height)) {
         dy = dy;
       } else {
         dy = dy * -1;
       }
       x = x + dx;
       y = y + dy;
       usleep(50 * 1000);
     }
     return 0;
   }
   

2. (hw18-2.c) Write a program that uses a for loop to print the numbers from 1 to 100 (inclusive of both) that detects which numbers are multiples of 4 and which are multiples of 7. Whenever a number is a multiple of 4, print "fizz\n" next to the number and whenever it is a multiple of 7, print "buzz\n" next to the number. There should only be one line per number. Use only a for loop and the constructs shown in class so far.

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See HW7's Self-check for instructions on checking what you have submitted to the remote grading repository.