转义字符和控制字符的理解

 1 #include "common.h"
 2 #include <stdio.h>
 3 #include <stdlib.h>
 4  
 5 static float test_point = 1.3435;
 6 static int   normal_point = 1;
 7 
 8 
 9 //8进制g
10 static int   test_data = 01000;
11 static char  signed_data = 0b01111111;
12 static unsigned char  unsigned_data = 0b11111111;
13 static char  full_signed_data = 0b11111111;
14 static char  A = ‘a‘;
15 
16 
17 
18 int main()
19 {
20     char letter = ‘\a‘;
21 
22     {
23         while (1)
24         {
25             printf("letter is %c\n", letter);
26             Sleep(1000);
27         }29         printf("my first task\n");
30     }
31 
32     return 0;
33 }