daily upload 5.8

15/15.1.c

@@ -0,0 +1,19 @@
+#include <stdio.h>
+int main (void)
+{
+  int val = 2, val2 = 3, val3 = 7;
+  unsigned char val1 = 2;
+
+  val3 &= val2;
+  ~val1;
+  printf ("%d, %u, %d, %d\n", ~val, ~val1, val & val2, val3);
+
+  val = 5;
+  val3 |= val;
+  printf ("%d \n", val3);
+
+  val3 = 5;
+  val3 ^= val;
+  printf ("%d \n", val3);
+  return 0;
+}

15/15.10.c

@@ -0,0 +1,60 @@
+#include "15.9_10.h"
+
+int main (int argc, char * argv[])
+{
+  bool eigen = 1;
+  int j, p;
+  char ch [5][33];
+
+  if (argc < 3)
+  {
+    printf ("No enough parameters. \n");
+    exit (0);
+  }
+
+  for (int i = 0; i < strlen (argv[1]); i ++)
+  {
+    if ((argv[1][i] != '0') && (argv[1][i] != '1'))
+    {
+      eigen = 0;
+      break;
+    }
+  }
+
+  if (eigen == 1)
+  {
+    j = b2dcov (argv[1]);
+  }else
+  {
+    printf ("Wrong input");
+    exit (0);
+  }
+
+  for (int i = 0; i < strlen (argv[2]); i ++)
+  {
+    if ((argv[2][i] != '0') && (argv[2][i] != '1'))
+    {
+      eigen = 0;
+      break;
+    }
+  }
+
+  if (eigen == 1)
+  {
+    p = b2dcov (argv[2]);
+  }else
+  {
+    printf ("Wrong input");
+    exit (0);
+  }
+
+  printf ("~ %s = %s\n", argv [1], itobs (~ j, ch[0]));
+  printf ("~ %s = %s\n", argv [2], itobs (~ p, ch[1]));
+  printf ("%s & %s = %s\n", argv[1], argv[2], itobs (j & p, ch[2]));
+  printf ("%s | %s = %s\n", argv[1], argv[2], itobs (j | p, ch[3]));
+  printf ("%s ^ %s = %s\n", argv[1], argv[2], itobs (j ^ p, ch[4]));
+  printf ("%d bits in %s open. \n", bits_open (j), argv[1]);
+  printf ("%d bits in %s open. \n", bits_open (p), argv[2]);
+
+  return 0;
+}

15/15.11.c

@@ -0,0 +1,42 @@
+#include "15.11.h"
+
+int main (int argc, char * argv[])
+{
+  int j, p;
+  char th[3];
+
+  if (argc < 3)
+  {
+    printf ("No enough parameters. \n");
+    exit (0);
+  }
+
+  j = str2int (argv[1]);
+  p = str2int (argv[2]);
+
+  if ((p > 32) || (p <= 0))
+  {
+    printf ("Bits are to %s. \n", (p > 32) ? "more" : "less");
+    exit (0);
+  }
+
+  switch (p)
+  {
+    case 1:
+      strcpy (th, "st\0");
+      break;
+    case 2:
+      strcpy (th, "nd\0");
+      break;
+    case 3:
+      strcpy (th, "rd\0");
+      break;
+    default:
+      strcpy (th, "th\0");
+      break;
+  }
+
+  printf ("%d's %d%s bit is %s. \n", j, p, th, (if_open (j, p)) ? "opened" : "closed");
+
+  return 0;
+}

15/15.11.h

@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int str2int (char * ch)
+{
+  int ret = 0;
+
+  for (int i = 0; i < strlen (ch); i ++)
+  {
+    ret *= 10;
+    ret += (ch[i] - 48);
+  }
+
+  return ret;
+}
+
+_Bool if_open (int j, int p)
+{
+  int mask;
+
+  mask = 1 << (p - 1);
+  return ((j & mask) == mask) ? 1 : 0;
+}

15/15.12.c

@@ -0,0 +1,43 @@
+#include <stdio.h>
+
+unsigned int rotate_1 (unsigned int j, unsigned int p);
+
+int main (void)
+{
+  unsigned int j, p;
+
+  printf ("Please enter a number to convert: \n");
+  scanf ("%u", &j);
+  while (getchar() != '\n');
+  printf ("Please enter how many bits to convert: \n");
+  scanf ("%u", &p);
+  while (getchar() != '\n');
+
+  printf ("The number converted is %u. \n", rotate_1 (j, p));
+
+  return 0;
+}
+
+unsigned int rotate_1 (unsigned int j, unsigned int p)
+{
+  unsigned int temp = 1 << p;
+  unsigned int j1, p1 = j, count = 0, mask = 0;
+
+  for (; p1 > 0; p1 >>= 1, count ++);
+
+  if (count < p)
+  {
+    return 0;
+  }
+
+  for (int i1 = 0, i2 = 1; i1 < (count - p); i1 ++, i2 <<= 1)
+  {
+    mask += i2;
+  }
+
+  for (j1 = j; j1 > temp; j1 >>= 1);
+  j &= mask;
+  j <<= p;
+
+  return j1 + j;
+}

15/15.13.c

@@ -0,0 +1,19 @@
+#include "15.13_14.h"
+
+int main (void)
+{
+  union font_para_in2ways
+  {
+    struct font_para font_para_instruct;
+    unsigned int font_para_inuint;
+  };
+
+  union font_para_in2ways set_font = {
+      1, 12, 0, 0, 0, 0
+  };
+
+  print_para (&set_font.font_para_instruct);
+  put_menu (&set_font.font_para_instruct);
+
+  return 0;
+}