Released assignment

12_read_ptr2/.gitignore

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+test

12_read_ptr2/README

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+ 1. Execute the code in "test.c" by hand, and write the output
+    printed to the terminal into a file called "answer.txt"
+
+ 2. Create a Makefile to compile test.c into a program called "test"
+
+ 3. Run test and use its output to check your work.
+
+ 4. Submit your Makefile and your answer.txt file
+
+

12_read_ptr2/test.c

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+#include <stdio.h>
+#include <stdlib.h>
+
+int f(int ** r, int ** s) {
+  int temp = ** r;
+  int temp2 = **s;
+  int * z = *r;
+  *r = *s;
+  *s = z;
+  printf("**r = %d\n",**r);
+  printf("**s = %d\n",**s);
+  *z += 3;
+  **s -= 8;
+  **r -= 19;
+  return temp + temp2;
+}
+
+int main(void) {
+  int a = 80;
+  int b = 12;
+  int * p = &a;
+  int * q = &b;
+  int x = f(&p, &q);
+  printf("x = %d\n", x);
+  printf("*p = %d\n", *p);
+  printf("*q = %d\n", *q);
+  printf("a = %d\n", a);
+  printf("b = %d\n", b);
+  return EXIT_SUCCESS;
+}