StringNAndBlockStream/BlockStreamAndStringNDriver.cpp at master · AmitSna/StringNAndBlockStream · GitHub

Repository navigation

/* BlockStreamAndStringNDriver.cpp

Escribe y lee archivo de registros con cadenas de tamaño acotado,

muestra los empleados con legajo mayor a 10.

2015-11-08 - 2018-06-30

Esp. Ing. José María Sola

Profesor

UTN FRBA */

#include <iostream>

#include "BlockStream.h"

#include "StringN.h"

int main(){

struct Person{

int id;

String<25> name; // instead of string name;

};

constexpr auto filename{"people"};

std::ofstream out{filename, std::ios::binary};

WriteBlock(out, Person{10, PackString("Bruce")}); // Wayne

WriteBlock(out, Person{11, PackString("Clark")}); // Kent

WriteBlock(out, Person{12, PackString("Joseph")}); // Dredd

out.close();

std::ifstream in{filename, std::ios::binary};

for(Person p; ReadBlock(in, p); )

if( p.id > 10 )

std::cout

<< p.id << ", "

<< UnpackString(p.name)

<< '\n';

in.close();

}