1 #include <cstdlib>
2 #include <iostream>
3 #include <iterator>
4 #include "string.h"
5 using namespace std;
6 struct{
7 short a1;
8 short a2;
9 short a3;
10 }A;
11
12 struct{
13 long a1;
14 short a2;
15 }B;
16
17 int main() {
18
19 std::cout << "Hello World!\n";
20 char *ss1 = "0123456789";
21 char ss2[] = "0123456789";
22 char ss3[100] = "0123456789";
23 int ss4[100];
24
25 char q1[] = "abc";
26 char q2[] = "a\n";
27 char *q3 = "a\n";
28
29 char *str1 = (char *)malloc(100);
30 char *str2 = (char *)malloc(100);
31
32 cout << "sizeof(ss1) = " << sizeof(ss1) << endl; // 64位操作系统就是显示的8，32位操作系统显示的4. *
33 cout << "strlen(ss1) = " << strlen(ss1) << endl; //10
34 cout << "sizeof(ss2) = " << sizeof(ss2) << endl; //11*
35 cout << "sizeof(ss3) = " << sizeof(ss3) << endl; //100
36 cout << "sizeof(ss4) = " << sizeof(ss4) << endl; //400*
37
38 cout << "sizeof(q1) = " << sizeof(q1) << endl; //4
39 cout << "sizeof(q2) = " << sizeof(q2) << endl; //3
40 cout << "sizeof(q3) = " << sizeof(q3) << endl; //8*
41
42 cout << "sizeof(A) = " << sizeof(A) << endl; //6
43 cout << "sizeof(B) = " << sizeof(B) << endl; //16 *
44
45 cout << "sizeof(str1) = " << sizeof(str1) << endl; //8 *
46 cout << "sizeof(str2) = " << sizeof(str2) << endl; //8 *
47
48
49
50 return 0;
51
52 }
