C++二进制文件保存数据 类与结构体的区别
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2021-01-03
16:42:28
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C++二进制文件保存数据二进制文件保存数据 类与结构体的区别类与结构体的区别
C++二进制文件保存数据二进制文件保存数据 类与结构体的区别类与结构体的区别
运行如下测试代码：
// OS： Ubuntu 19.10
// gcc version 9.2.1 20191008 (Ubuntu 9.2.1-9ubuntu2)
#include
#include
#include
#include
using std::string;
using std::ofstream;
using std::cout;
using std::cerr;
using std::endl;
using std::ios;
class Test {
private:
int value;
int data;
public:
Test() { value = 0; data = 0; }
Test(int num1, int num2) : value(num1), data(num2) {}
void show() { cout << value << ' ' << data << endl; }
int getValue() const { return value; }
int getData() const { return data; }
void setValue(int num) { value = num; }
void setData(int num) { data = num; }
};
struct TestSt {
int value;
int data;
};
int main(int argc, char const *argv[])
{
const string file_path_class = "/home/aimerneige/temp/class.aimt";
const string file_path_struct = "/home/aimerneige/temp/struct.aimt";
Test t(15, 255);
TestSt ts = {15, 255};
ofstream outfile_class(file_path_class, ios::binary);
if (!outfile_class) {
cerr << "Can't open the file outfile_class" << endl;
exit(1);
}
else {
cout << "Open outfile_class success!" << endl;
}
outfile_class.write((char *) &t, sizeof(t));
outfile_class.close();
ofstream outfile_struct(file_path_struct, ios::binary);
if (!outfile_struct) {
cerr << "Can't open the file outfile_struct" << endl;
exit(1);
}
else {
cout << "Open outfile_struct success!" << endl;
}
outfile_struct.write((char *) &ts, sizeof(ts));
outfile_struct.close();
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