cppdatabase added
cppdatabase stores data in a file and retrieves it back
committer: Markus Bröker <mbroeker@largo.homelinux.org>
--- a/Makefile
+++ b/Makefile
@@ -66,6 +66,7 @@
TARGET += daemon
TARGET += numbers
TARGET += nearest
+TARGET += cppdatabase
.SUFFIXES: .c .cc .asm
@@ -317,6 +318,10 @@
@echo Linking $<...
@$(CPP) -Wall -O2 -g -ggdb $< -o $@
+cppdatabase: cppdatabase.o
+ @echo Linking $<...
+ @$(CPP) -Wall -O2 -g -ggdb $< -o $@
+
.PHONY: beauty clean uninstall
clean:
new file mode 100644
--- /dev/null
+++ b/cppdatabase.cc
@@ -0,0 +1,77 @@
+/**
+ * cppdatabase.cc
+ * Copyright (C) 2009 Markus Broeker
+ *
+ * stores data in a file and retrieves it back
+ */
+
+#include <cstdlib>
+#include <iostream>
+#include <fstream>
+
+#define DB_FILE "/tmp/test.dat"
+
+struct Person {
+ char lastname[80];
+ char firstname[80];
+ char position[80];
+};
+
+void make_db_entry (std::ofstream& out, struct Person& p)
+{
+ out.write ((char *)&p, sizeof (Person));
+}
+
+void read_db_entry (std::ifstream& in)
+{
+ std::cout << "clear eof" << std::endl;
+ in.clear ();
+ std::cout << "seek status: " << in.seekg (0, std::ios::beg) <<
+ std::endl << std::endl;
+
+ struct Person p;
+
+ while ((in.read ((char *)&p, sizeof (Person))) != NULL) {
+ std::cout << p.lastname << ", " << p.firstname << ", " <<
+ p.position << std::endl;
+ }
+}
+
+using namespace std;
+
+int main ()
+{
+ struct Person p[] = {
+ {"Ribery", "Franck", "Midfielder"},
+ {"Lahm", "Phillip", "Defender"},
+ {"Toni", "Luca", "Striker"},
+ {"Klose", "Miroslav", "Striker"},
+ };
+
+ ifstream in;
+ ofstream out;
+
+ out.open (DB_FILE, ios::binary);
+ if (!out) {
+ cout << "Outputfile Error " << DB_FILE << endl;
+ return EXIT_FAILURE;
+ }
+
+ for (unsigned int i = 0; i < sizeof (p) / sizeof (Person); i++) {
+ make_db_entry (out, p[i]);
+ }
+ out.close ();
+
+ in.open (DB_FILE);
+ if (!in) {
+ cout << "Inputfile Error " << DB_FILE << endl;
+ return EXIT_FAILURE;
+ }
+
+ read_db_entry (in);
+ read_db_entry (in);
+
+ in.close ();
+
+ return EXIT_SUCCESS;
+}