1 files changed, 33 insertions, 0 deletions
diff --git a/usth/ICT2.1/labwork/1/Ex3.c b/usth/ICT2.1/labwork/1/Ex3.c
new file mode 100644
index 0000000..f20bb54
--- /dev/null
+++ b/usth/ICT2.1/labwork/1/Ex3.c
@@ -0,0 +1,33 @@
+/*
+ * Read coordinates of 2 2D-points from stdin and print their distance to stdout
+ * This is free and unencumbered software released into the public domain.
+ */
+
+#include <math.h>
+#include <stdio.h>
+
+/*
+ * The overhead caused by re-evaluating x in this case is much
+ * to change this into a function call.
+ */
+#define SQR(x) ((x) * (x))
+
+/* Conventionally C names are in lowercase */
+struct point {
+	double x, y;
+};
+
+double distance(struct point u, struct point v)
+{
+	return sqrt(SQR(u.x - v.x) + SQR(u.y - v.y));
+}
+
+int main()
+{
+	struct point m, n;
+
+	scanf("%lf %lf %lf %lf", &m.x, &m.y, &n.x, &n.y);
+	printf("%g\n", distance(m, n));
+
+	return 0;
+}