1 files changed, 26 insertions, 0 deletions
diff --git a/11_read_ptr1/test.c b/11_read_ptr1/test.c
new file mode 100644
index 0000000..5d91622
--- /dev/null
+++ b/11_read_ptr1/test.c
@@ -0,0 +1,26 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+void g(int x, int * y) {
+  printf("In g, x = %d, *y = %d\n", x, *y);
+  x++;
+  *y = *y - x;
+  y = &x;
+}
+
+void f(int * a, int b) {
+  printf("In f, *a = %d, b = %d\n", *a, b);
+  *a += b;
+  b *= 2;
+  g(*a, &b);
+  printf("Back in f, *a = %d, b = %d\n", *a, b);
+}
+
+
+int main(void) {
+  int x = 3;
+  int y = 4;
+  f(&x, y);
+  printf("In main: x = %d, y = %d\n", x, y);
+  return EXIT_SUCCESS;
+}