1 #include <iostream>
2 #include <iomanip>
3 #include <cstdio>
4 #include <fstream>
5 using namespace std;
6
7 // CPP program to demonstrate working of
8 // reinterpret_cast
9 void TestReinterpret_cast()
10 {
11 int* p = new int(65);
12 char* ch = reinterpret_cast<char*>(p);
13 cout << *p << endl;
14 cout << *ch << endl;
15 cout << p << endl;
16 cout << ch << endl;
17 }
18
19 //Hex
20 void ToolPrintHex()
21 {
22 ofstream file;
23 file.open("data_.log",std::ios_base::trunc);
24
25 char b[] = "ABCEDFG"; //b始终指向他所代表的数组在内存中的位置，始终可写！
26 const char* a = b; //a指向的是一个字符串常量，即指向的内存区域只读；
27 int len = sizeof(b) / sizeof(char) - 1; //=8,最后有一个'\0'
28 for (int i = 0; i < len; i++)
29 {
30 cout << i <<":" << a[i] <<" "; //(a+i):BCDEFG,CDEFG...
31 cout << hex << setfill(' ') << setw(2) << (unsigned int)(unsigned char)(a[i]) << " ";
32 cout << hex << setfill(' ') << setw(2) << (int)b[i]<<endl<<flush;
33 file << hex << setfill(' ') << setw(2) << (unsigned int)(unsigned char)(a[i]) << " ";
34 }
35 }
