moving from gitlab

005Timer/timer.c

@@ -0,0 +1,73 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+struct time {
+  unsigned int hours, minutes, seconds;
+};
+
+unsigned int timeToSeconds(struct time);
+struct time secondsToTime(unsigned int);
+void displayTime(unsigned int);
+
+int main(int argc, char *argv[]) {
+
+  struct time t;
+  t.seconds = 0;
+  t.minutes = 0;
+  t.hours = 0;
+  char c;
+
+  if (argc == 1) {
+    printf("No time passed--using default: 1 min\n");
+    t.minutes = 1;
+  } else {
+    while ((c = getopt(argc, argv, "h:m:s:")) != -1) {
+      switch (c) {
+      case 'h':
+        t.hours = atoi(optarg);
+        break;
+      case 'm':
+        t.minutes = atoi(optarg);
+        break;
+      case 's':
+        t.seconds = atoi(optarg);
+        break;
+      }
+    }
+  }
+
+  unsigned int seconds = timeToSeconds(t);
+  while (seconds > 0) {
+
+    displayTime(seconds);
+    sleep(1);
+    seconds -= 1;
+  }
+
+  return 0;
+}
+
+unsigned int timeToSeconds(struct time t) {
+  unsigned int seconds = 0;
+
+  seconds = t.seconds;
+  seconds += t.minutes * 60;
+  seconds += t.hours * 60 * 60;
+  return seconds;
+}
+struct time secondsToTime(unsigned int seconds) {
+  struct time t;
+
+  t.hours = seconds / 3600;
+  t.minutes = (seconds - (3600 * t.hours)) / 60;
+  t.seconds = (seconds - (3600 * t.hours)) - (t.minutes * 60);
+
+  return t;
+}
+
+void displayTime(unsigned int seconds) {
+  system("clear");
+  struct time t = secondsToTime(seconds);
+  printf("%02d:%02d:%02d\n", t.hours, t.minutes, t.seconds);
+}