#include "stdafx.h"#include <iostream> using namespace std;int _tmain(int argc, _TCHAR* argv[]){    cout << endl << "关于数组的问题" <<endl;    int a[] = {1, 2, 3, 4, 5};    int* ptr = (int*)(&a + 1);    cout << "*(a + 1) = "<< *(a + 1)<<endl;    cout << "*(ptr - 1) = " << *(ptr - 1)<< endl;      cout << endl << endl;     cout << endl << endl << "关于浮点数 四舍五入 并 保留两位小数的问题" << endl;    float n = 1.235567F;    int m = 0;    m = n * 100 + 0.5F;    n = m / 100.0F;    cout << "n = " << n <<endl;    cout << "1234532532 / 100.0F = "<< 12345 / 100.0F << endl;     cout << endl << endl << "关于strcpy参数长度的问题" << endl;    char dest[100], src[10];    for (int i = 0; i < sizeof(src) / sizeof(src[0]); ++ i)    {        src[i] = ‘a‘;    }    src[(sizeof(src) / sizeof(src[0])) - 1] = ‘\0‘;    cout << endl <<"源字符串保修以 \\0 结尾" <<endl;    strcpy(dest, src);    cout << "dest = " << dest << endl;     return 0;}