C

pointer.c

@@ -0,0 +1,14 @@
+#include <stdio.h>
+
+int main () {
+
+    int speedTrain = 150;
+    int* ptr = &speedTrain;
+
+    printf("%d\n", speedTrain);
+    printf("%p\n", &speedTrain);
+    printf("%p\n", ptr);
+    printf("%d\n", *ptr);
+
+return 0;
+}