Read and Write files in binary mode in C ++

Today, I learned how to use C ++ to store binary files. I have been discussing it with seven for a long time on QQ and haven't made it yet. Later I found it a function problem.

It is estimated that many people know how to use it.

 
Ofstream out ("test. Binary", IOS: Binary | IOs: Out );
 

And this

 
Ifstream in ("test. Binary", IOS: Binary | IOs: In );
 

These two methods are used to set File Reading and Writing. They are in binary format. However, it is very important that you cannot directly use out <and in>, read and Write Functions are required. The following is a simple example.

# Include <iostream> # include <string> # include <fstream> using namespace STD; void save () {ofstream out ("test. binary ", IOS: Binary | IOs: Out); short B =-189; out. write (const char *) & B, sizeof (B); float a; For (INT I = 0; I <10; I ++) {A = 0.128937; out. write (const char *) & A, sizeof (a);} Out. close (); out. clear ();} void load () {ifstream in ("test. binary ", IOS: Binary | IOs: In); short U1; In. read (char *) & u1, sizeof (U1); cout <U1 <Endl; For (INT I = 0; I <10; I ++) {float AA; In. read (char *) & aa, sizeof (AA); cout <AA <Endl;} In. close (); In. clear () ;}int main () {int upset; save (); load (); CIN >>upset; return 0 ;}
 

It is certainly no problem to store the data in this way, and there is no problem to read the data. after a busy day, it is actually so simple. I am also eager to consider what byte array and what type conversion to use, it's speechless.

Okay, don't ask seven any more.