Add file and code from project1 to project4

Add material from project1 to project4

Author: sam

Define my own fstream class/fifo/Makefile

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+TARGETS = sender.exe receiver.exe
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+all: $(TARGETS)
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+run: all
+	mkfifo test.fifo
+	xterm -e ./sender.exe &
+	sleep 5
+	./receiver.exe
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+run2: all
+	mkfifo test.fifo
+	./receiver.exe &
+	sleep 5
+	xterm -e ./sender.exe &
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+clean:
+	rm -f *.exe
+	rm -f *.fifo
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+%.exe: %.c
+	gcc -o $@ $^
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Define my own fstream class/fifo/receiver.c

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+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
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+#include <stdio.h>
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+main()
+{
+	int fd;
+	char buf[] = "abcdefghijklmnopqrstuvwxyz";
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+	fd = open ("test.fifo", O_RDONLY);
+	read (fd, buf, 100);
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+	printf ("read string from FIFO: %s\n", buf);
+
+	return 0;
+}//main()
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Define my own fstream class/fifo/sender.c

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+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
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+#include <string.h>
+
+#include <stdio.h>
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+main()
+{
+	int fd;
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+	printf ("sending string Hello!\n");
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+	fd = open ("test.fifo", O_WRONLY);
+	write (fd, "Hello!", strlen("Hello!")+1);
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+	printf ("DONE! press CTRL-C to exit\n");
+	while (1);
+
+	return 0;
+}//main()
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Define my own fstream class/files_demo/Makefile

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+C_SRC_FILES += $(wildcard *.c)
+TARGETS = $(C_SRC_FILES:.c=)
+GCC_FLAGS +=
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+all: $(TARGETS)
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+clean:
+	rm -f *.o
+	rm -f $(TARGETS)
+	rm -f *.txt
+	rm -f *.bin
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+%: %.c
+	gcc -o $@ $(GCC_FLAGS) $^
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Define my own fstream class/files_demo/read_bin.c

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+#include <stdio.h>
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+main (argc, argv)
+	int argc;
+	char *argv[];
+{
+	FILE *fp;
+	int buf[100];
+	int n;
+	int i;
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+	fp = fopen (argv[1], "r");
+	if (fp==NULL) return -1;
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+	n = fread (buf, sizeof(int), 100, fp);
+	for (i=0;i<n;i++)
+		printf ("0x%08x ", buf[i]);
+	printf ("\n");
+
+	return 0;
+}//main ()
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Define my own fstream class/files_demo/read_mixed.c

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+#include <stdio.h>
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+main (argc, argv)
+	int argc;
+	char *argv[];
+{
+	unsigned char buf [400];
+	int n;
+	int i;
+	FILE *fp;
+	char c;
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+	fp = fopen (argv[1], "r");
+	n = fread (buf, sizeof(char), 400, fp);
+
+	for (i=0;i<n;i++) {
+		c = (buf[i]>='a' && buf[i]<='z')? buf[i]: '.';
+		printf ("0x%02x\t%c\n", buf[i], c);
+	}
+	printf ("\n");
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+	return 0;
+}//main ()
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Define my own fstream class/files_demo/read_text.c

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+#include <stdio.h>
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+main (argc, argv)
+	int argc;
+	char *argv[];
+{
+	FILE *fp;
+	char str[100];
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+	fp = fopen (argv[1], "r");
+	if (fp==NULL) return -1;
+	fscanf (fp, "%s", str);
+	printf ("%s\n", str);
+
+	return 0;
+}//main ()
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Define my own fstream class/files_demo/write_bin.c

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+#include <stdio.h>
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+main (argc, argv)
+	int argc;
+	char *argv[];
+{
+	FILE *fp;
+	int a[] = {0x12345678, 0xabcdef00, 0x98765432, 0xaabbccdd, 0x11223344};
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+	fp = fopen (argv[1], "w");
+	fwrite (a, sizeof(int), 5, fp);
+	fclose (fp);
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+	return 0;
+}//main ()
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Define my own fstream class/files_demo/write_mixed.c

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+#include <stdio.h>
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+main (argc, argv)
+	int argc;
+	char *argv[];
+{
+	int a[] = {0x12345678, 0xabcdef00, 0x98765432, 0xaabbccdd, 0x11223344};
+	FILE *fp;
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+	fp = fopen (argv[1], "w");
+	fwrite (a, 5, sizeof(int), fp);
+	fprintf (fp, "hello");
+	fclose (fp);
+
+	return 0;
+}//main
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Define my own fstream class/files_demo/write_text.c

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+#include <stdio.h>
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+main (argc, argv)
+	int argc;
+	char *argv[];
+{
+	FILE *fp;
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+	fp = fopen (argv[1], "w");
+	fprintf (fp, "Hello!\n");
+	fclose (fp);
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+	return 0;
+}//main()
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