Initial commit

2021/day01/day01.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+
+int main(void)
+{
+  int buf[5000] = {0};
+  int count = 0;
+  while (scanf("%d\n", &buf[count++]) != EOF);
+  count--;
+
+  int part1 = 0;
+  for (int i = 1; i < count; ++i) {
+    part1 += buf[i] > buf[i - 1];
+  }
+  printf("%d\n", part1);
+
+  int part2 = 0;
+  for (int i = 3; i < count; ++i) {
+    part2 += buf[i] > buf[i-3];
+  }
+  printf("%d\n", part2);
+
+  return 0;
+}