feat: update structure

cs2106/labs/lab4/bitmap/testmalloc.c

@@ -0,0 +1,35 @@
+#include "mymalloc.h"
+#include <stdio.h>
+
+void testalloc(long size, char *ptrname, char **ptr) {
+  printf("\nAllocating %ld bytes to %s\n", size, ptrname);
+  *ptr = mymalloc(size);
+
+  if (*ptr == NULL)
+    printf("Allocation failed.\n");
+  print_memlist();
+}
+
+void testfree(char *ptr, char *ptrname) {
+  printf("\nFreeing %s\n", ptrname);
+  myfree(ptr);
+  print_memlist();
+}
+
+int main() {
+  char *ptr1, *ptr2, *ptr3, *ptr4, *ptr5;
+
+  testalloc(4, "ptr1", &ptr1);
+  testalloc(32, "ptr2", &ptr2);
+  testalloc(4, "ptr3", &ptr3);
+  testfree(ptr2, "ptr2");
+  testalloc(24, "ptr2", &ptr2);
+  testalloc(6, "ptr4", &ptr4);
+  testfree(ptr2, "ptr2");
+  testalloc(32, "ptr5", &ptr5);
+  testfree(ptr1, "ptr1");
+  testfree(ptr2, "ptr2");
+  testfree(ptr3, "ptr3");
+  testfree(ptr4, "ptr4");
+  testfree(ptr5, "ptr5");
+}