Move some other code here

Signed-off-by: Carlos Maiolino <[email protected]>

34 files changed, 495 insertions, 0 deletions

diff --git a/C/HF/array.c b/C/HF/array.c
new file mode 100644
index 0000000..8410be0
--- /dev/null
+++ b/C/HF/array.c
@@ -0,0 +1,10 @@
+#include <stdio.h>
+
+int main(void)
+{
+	char s[] = "Howdy horny!\n";
+	char *t = s;
+
+	puts((t + 6));
+	return 0;
+}
diff --git a/C/HF/bermuda.c b/C/HF/bermuda.c
new file mode 100644
index 0000000..d1657c5
--- /dev/null
+++ b/C/HF/bermuda.c
@@ -0,0 +1,21 @@
+#include <stdio.h>
+
+int
+main(void)
+{
+	float latitude;
+	float longitude;
+	char info[80];
+	int started = 0;
+
+	while (scanf("%f,%f,%79[^\n]",&longitude, &latitude, info) == 3) {
+
+		if ((longitude > -76 && longitude < -64) &&
+		    (latitude > 26 && latitude < 34))
+			printf("%f,%f,%s\n",longitude, latitude, info);
+	}
+
+	return 0;
+}
+
+
diff --git a/C/HF/categorize.c b/C/HF/categorize.c
new file mode 100644
index 0000000..a455224
--- /dev/null
+++ b/C/HF/categorize.c
@@ -0,0 +1,45 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+void
+usage(char *program)
+{
+	printf("Usage:\n");
+	printf("\t%s: <filter1> <output_file_1> <filter2> <output_file_2> <everything>\n",
+	       program);
+	exit(1);
+}
+
+int
+main(int argc, char *argv[])
+{
+	char line[80];
+	FILE *in;
+	FILE *file1;
+	FILE *file2;
+	FILE *file3;
+
+	if (argc != 6)
+		usage(argv[0]);
+
+	in = fopen("spooky.csv", "r");
+	file1 = fopen(argv[2], "w");
+	file2 = fopen(argv[4], "w");
+	file3 = fopen(argv[5], "w");
+
+	while (fscanf(in, "%79[^\n]\n", line) == 1) {
+		if (strstr(line, argv[1]))
+			fprintf(file1, "%s\n", line);
+		else if (strstr(line, argv[3]))
+			fprintf(file2, "%s\n", line);
+		else
+			fprintf(file3, "%s\n", line);
+	}
+
+	fclose(in);
+	fclose(file1);
+	fclose(file2);
+	fclose(file3);
+	return 0;
+}
diff --git a/C/HF/chap4/cryptic/Makefile b/C/HF/chap4/cryptic/Makefile
new file mode 100644
index 0000000..64312d5
--- /dev/null
+++ b/C/HF/chap4/cryptic/Makefile
@@ -0,0 +1,14 @@
+ecat: ecat.o encrypt.o
+	cc -o ecat ecat.o encrypt.o
+
+ecat.o: encrypt.h ecat.c
+	cc -c ecat.c
+
+message: message.o encrypt.o
+	cc -o message message.o encrypt.o
+
+message.o: encrypt.h message.c
+	cc -c message.c
+
+encrypt.o: encrypt.h encrypt.c
+	cc -c encrypt.c
diff --git a/C/HF/chap4/cryptic/ecat.c b/C/HF/chap4/cryptic/ecat.c
new file mode 100644
index 0000000..5266116
--- /dev/null
+++ b/C/HF/chap4/cryptic/ecat.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include "encrypt.h"
+
+int main(int argc, char **argv)
+{
+	FILE *fd;
+	char buf[80];
+
+	if (argc != 2)
+		return 1;
+
+	fd = fopen(argv[1], "r");
+
+	while (fgets(buf, 80, fd)) {
+		encrypt(buf);
+		printf("%s", buf);
+	}
+
+	printf("\n");
+	fclose(fd);
+
+	return 0;
+}
diff --git a/C/HF/chap4/cryptic/encrypt.c b/C/HF/chap4/cryptic/encrypt.c
new file mode 100644
index 0000000..128b1a4
--- /dev/null
+++ b/C/HF/chap4/cryptic/encrypt.c
@@ -0,0 +1,9 @@
+#include "encrypt.h"
+
+void encrypt(char *message)
+{
+	while (*message) {
+		*message = *message ^ 42;
+		message++;
+	}
+}
diff --git a/C/HF/chap4/cryptic/encrypt.h b/C/HF/chap4/cryptic/encrypt.h
new file mode 100644
index 0000000..7d5cf9d
--- /dev/null
+++ b/C/HF/chap4/cryptic/encrypt.h
@@ -0,0 +1,6 @@
+#ifndef ENCRYPT_H
+#define ENCRYPT_H
+
+void encrypt(char *m);
+
+#endif
diff --git a/C/HF/chap4/cryptic/message.c b/C/HF/chap4/cryptic/message.c
new file mode 100644
index 0000000..345774c
--- /dev/null
+++ b/C/HF/chap4/cryptic/message.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include "encrypt.h"
+
+int main(void)
+{
+	char msg[80];
+	while (fgets(msg, 80, stdin)) {
+		encrypt(msg);
+		printf("%s\n", msg);
+	}
+
+	return 0;
+}
diff --git a/C/HF/chap4/func_maze.c b/C/HF/chap4/func_maze.c
new file mode 100644
index 0000000..a65a3d1
--- /dev/null
+++ b/C/HF/chap4/func_maze.c
@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+float amuze_me(void) {
+	return 3.9;
+}
+
+int main(void)
+{
+	int foo = amuze_me();
+	printf("%i\n", foo);
+	return 0;
+}
diff --git a/C/HF/chap4/lab1/moisture.c b/C/HF/chap4/lab1/moisture.c
new file mode 100644
index 0000000..349050f
--- /dev/null
+++ b/C/HF/chap4/lab1/moisture.c
@@ -0,0 +1,45 @@
+/* This works - tested on Tinkercad */
+#define THRESHOLD 800
+#define DRY 500
+
+#define LED 13
+
+setup(){
+	Serial.begin(9600);
+	pinMode(LED, OUTPUT);
+	digitalWrite(LED, LOW);
+}
+
+void blink_led(long interval) {
+	digitalWrite(LED, LOW);
+	delay(interval);
+	digitalWrite(LED, HIGH);
+}
+
+void led_on(void)
+{
+	if (digitalRead(LED) == LOW)
+		digitalWrite(LED, HIGH);
+}
+
+void led_off(void)
+{
+	if (digitalRead(LED) == HIGH) {
+		digitalWrite(LED, LOW);
+		Serial.println("Thank you, Seymour");
+	}
+}
+
+void loop(){
+	int moist = analogRead(1);
+	if (moist > THRESHOLD) {
+		led_off();
+		continue;
+	}
+
+	if (moist < DRY)
+		blink_led(500);
+	else
+		led_on();
+	Serial.println("Feed me!");
+}
diff --git a/C/HF/chap4/type.c b/C/HF/chap4/type.c
new file mode 100644
index 0000000..f63e134
--- /dev/null
+++ b/C/HF/chap4/type.c
@@ -0,0 +1,12 @@
+#include <stdio.h>
+#include <limits.h>
+#include <float.h>
+
+int main() {
+	printf("INT_MAX: %i\n", INT_MAX);
+	printf("INT_MIN: %i\n", INT_MIN);
+	printf("FLT_MAX: %f\n", DBL_MAX);
+	printf("FLT_MIN: %.600f\n", DBL_MIN);
+	printf("Int: %i\n", sizeof(size_t));
+	return 0;
+}
diff --git a/C/HF/chap5/data.c b/C/HF/chap5/data.c
new file mode 100644
index 0000000..4034480
--- /dev/null
+++ b/C/HF/chap5/data.c
@@ -0,0 +1,46 @@
+#include <stdio.h>
+
+enum q {
+	COUNT,
+	WEIGHT,
+	VOLUME,
+};
+
+/* Using anonymous data structures is awesome */
+struct item {
+	char *desc;
+	union {
+		long int count;
+		float weight;
+		float volume;
+	};
+	enum q type;
+}__attribute((packed))__;
+
+int main(void) {
+
+	struct item fruit =
+	{
+		.desc = "apple",
+	};
+
+	fruit.type = WEIGHT;
+
+	if (fruit.type == COUNT) {
+		fruit.weight = 3.87;
+		printf("Fruit = %s is %ld\n", fruit.desc, fruit.count);
+	}
+	if (fruit.type == WEIGHT) {
+		fruit.weight = 69.5;
+		printf("Fruit = %s is %2.2f\n", fruit.desc, fruit.weight);
+	}
+	if (fruit.type == VOLUME) {
+		fruit.volume = 63.5;
+		printf("Fruit = %s is %2.2f\n", fruit.desc, fruit.volume);
+	}
+
+	printf("struct item: %lu - count: %lu - weight: %lu - volume: %lu - type: %lu\n",
+	       sizeof(struct item), sizeof(fruit.count), sizeof(fruit.weight),
+	       sizeof(fruit.volume), sizeof(fruit.type));
+	return 0;
+}
diff --git a/C/HF/chap7/Makefile b/C/HF/chap7/Makefile
new file mode 100644
index 0000000..64312d5
--- /dev/null
+++ b/C/HF/chap7/Makefile
@@ -0,0 +1,14 @@
+ecat: ecat.o encrypt.o
+	cc -o ecat ecat.o encrypt.o
+
+ecat.o: encrypt.h ecat.c
+	cc -c ecat.c
+
+message: message.o encrypt.o
+	cc -o message message.o encrypt.o
+
+message.o: encrypt.h message.c
+	cc -c message.c
+
+encrypt.o: encrypt.h encrypt.c
+	cc -c encrypt.c
diff --git a/C/HF/chap7/ecat.c b/C/HF/chap7/ecat.c
new file mode 100644
index 0000000..ec034e4
--- /dev/null
+++ b/C/HF/chap7/ecat.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include "xor.h"
+#include "encrypt.h"
+
+int main(int argc, char **argv)
+{
+	FILE *fd;
+	char buf[80];
+
+	if (argc != 2)
+		return 1;
+
+	fd = fopen(argv[1], "r");
+
+	while (fgets(buf, 80, fd)) {
+		encrypt(buf, xor64);
+		printf("%s", buf);
+	}
+
+	printf("\n");
+	fclose(fd);
+	return 0;
+}
diff --git a/C/HF/chap7/ecat.core b/C/HF/chap7/ecat.core
new file mode 100644
index 0000000..2b80a6f
--- /dev/null
+++ b/C/HF/chap7/ecat.core
diff --git a/C/HF/chap7/encrypt.c b/C/HF/chap7/encrypt.c
new file mode 100644
index 0000000..1b5ce25
--- /dev/null
+++ b/C/HF/chap7/encrypt.c
@@ -0,0 +1,6 @@
+#include "encrypt.h"
+typedef void (*encrypt_fn_t)(char *message);
+
+void encrypt(char *message, encrypt_fn_t encrypt_fn) {
+	encrypt_fn(message);
+}
diff --git a/C/HF/chap7/encrypt.h b/C/HF/chap7/encrypt.h
new file mode 100644
index 0000000..4e130e9
--- /dev/null
+++ b/C/HF/chap7/encrypt.h
@@ -0,0 +1,7 @@
+#ifndef ENCRYPT_H
+#define ENCRYPT_H
+
+typedef void (*encrypt_fn_t)(char *message);
+void encrypt(char *message, encrypt_fn_t);
+
+#endif /* ENCRYPT_H */
diff --git a/C/HF/chap7/ls.txt b/C/HF/chap7/ls.txt
new file mode 100644
index 0000000..928beb3
--- /dev/null
+++ b/C/HF/chap7/ls.txt
@@ -0,0 +1 @@
+
J
diff --git a/C/HF/chap7/message.c b/C/HF/chap7/message.c
new file mode 100644
index 0000000..345774c
--- /dev/null
+++ b/C/HF/chap7/message.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include "encrypt.h"
+
+int main(void)
+{
+	char msg[80];
+	while (fgets(msg, 80, stdin)) {
+		encrypt(msg);
+		printf("%s\n", msg);
+	}
+
+	return 0;
+}
diff --git a/C/HF/chap7/text.txt b/C/HF/chap7/text.txt
new file mode 100644
index 0000000..c87bea7
--- /dev/null
+++ b/C/HF/chap7/text.txt
@@ -0,0 +1 @@
+RONALDO
diff --git a/C/HF/chap7/xor.c b/C/HF/chap7/xor.c
new file mode 100644
index 0000000..0efa3a4
--- /dev/null
+++ b/C/HF/chap7/xor.c
@@ -0,0 +1,20 @@
+#include <stdio.h>
+#include "xor.h"
+
+void xor42(char *message)
+{
+	printf("Orig: %s\n", message);
+	while (*message) {
+		*message = *message ^ 42;
+		message++;
+	}
+}
+
+void xor64(char *message)
+{
+	printf("Orig: %s\n", message);
+	while (*message) {
+		*message = *message ^ 64;
+		message++;
+	}
+}
diff --git a/C/HF/chap7/xor.h b/C/HF/chap7/xor.h
new file mode 100644
index 0000000..6f3de42
--- /dev/null
+++ b/C/HF/chap7/xor.h
@@ -0,0 +1,7 @@
+#ifndef XOR_H
+#define XOR_H
+
+void xor42(char *m);
+void xor64(char *m);
+
+#endif
diff --git a/C/HF/disappearance.csv b/C/HF/disappearance.csv
new file mode 100644
index 0000000..2edfd07
--- /dev/null
+++ b/C/HF/disappearance.csv
@@ -0,0 +1 @@
+scully Disappearance
diff --git a/C/HF/geo2json.c b/C/HF/geo2json.c
new file mode 100644
index 0000000..f1d3f8a
--- /dev/null
+++ b/C/HF/geo2json.c
@@ -0,0 +1,31 @@
+#include <stdio.h>
+
+int
+main(void)
+{
+	float latitude;
+	float longitude;
+	char info[80];
+	int started = 0;
+
+	puts("data=[");
+	while (scanf("%f,%f,%79[^\n]",&longitude, &latitude, info) == 3) {
+		if (started)
+			printf(",\n");
+		else
+			started = 1;
+
+		if (longitude < -180 || longitude > 180 ||
+		    latitude < -90 || latitude > 90) {
+			fprintf(stderr, "Latitude must be between -90,90 and longitude -180,180\n");
+			return 2;
+		}
+
+		printf("{latitude: %f, longitude: %f, info: '%s'}",
+		       latitude, longitude, info);
+	}
+	puts("\n]");
+	return 0;
+}
+
+
diff --git a/C/HF/in.txt b/C/HF/in.txt
new file mode 100644
index 0000000..0a5e5b9
--- /dev/null
+++ b/C/HF/in.txt
@@ -0,0 +1,6 @@
+45.99,-23.11,speed = 3
+69.32,93.91,speed = 95
+-68.345,28.243,speed = 69
+196.19,59.90,speed = 33
+77.29,-12.34,speed = 1
+89.69,56.78,speed = 9
diff --git a/C/HF/order_pizza.c b/C/HF/order_pizza.c
new file mode 100644
index 0000000..aec19ac
--- /dev/null
+++ b/C/HF/order_pizza.c
@@ -0,0 +1,40 @@
+#include <stdio.h>
+#include <unistd.h>
+
+int
+main(int argc, char **argv)
+{
+	char *delivery = "";
+	int thick = 0;
+	int count = 0;
+	char ch;
+
+	while ((ch = getopt(argc, argv, "d:t")) != EOF)
+		switch (ch) {
+		case 'd':
+			delivery = optarg;
+			break;
+		case 't':
+			thick = 1;
+			break;
+		default:
+			fprintf(stderr, "Unknown option: '%s'\n", optarg);
+			return 1;
+		}
+
+	argc -= optind;
+	argv += optind;
+
+	if (thick)
+		puts("Thick crust.");
+
+	if (delivery[0])
+		printf("To be delivered %s\n", delivery);
+
+	puts("Ingredients:");
+
+	for (count = 0; count < argc; count++)
+		puts(argv[count]);
+
+	return 0;
+}
diff --git a/C/HF/others.csv b/C/HF/others.csv
new file mode 100644
index 0000000..7f5a4f5
--- /dev/null
+++ b/C/HF/others.csv
@@ -0,0 +1,3 @@
+ronaldo curintia
+mulder UFO
+mandinga da braba
diff --git a/C/HF/out.json b/C/HF/out.json
new file mode 100644
index 0000000..f0b6cde
--- /dev/null
+++ b/C/HF/out.json
@@ -0,0 +1,2 @@
+data=[
+{latitude: -23.110001, longitude: 45.990002, info: 'speed = 3'},
diff --git a/C/HF/output.json b/C/HF/output.json
new file mode 100644
index 0000000..94fb2ff
--- /dev/null
+++ b/C/HF/output.json
@@ -0,0 +1,7 @@
+data=[
+{latitude: -23.110001, longitude: 45.990002, info: 'speed = 3'},
+{latitude: 33.910000, longitude: 69.320000, info: 'speed = 95'},
+{latitude: 59.900002, longitude: 66.190002, info: 'speed = 33'},
+{latitude: -12.340000, longitude: 77.290001, info: 'speed = 1'},
+{latitude: 56.779999, longitude: 89.690002, info: 'speed = 9'}
+]
diff --git a/C/HF/rocks.c b/C/HF/rocks.c
new file mode 100644
index 0000000..b244659
--- /dev/null
+++ b/C/HF/rocks.c
@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main() {
+	puts("Corno");
+	return 0;
+}
diff --git a/C/HF/shuffle.c b/C/HF/shuffle.c
new file mode 100644
index 0000000..eb11bf9
--- /dev/null
+++ b/C/HF/shuffle.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+
+int main()
+{
+	char cards[] = "JQK";
+	char a_card = cards[2];
+	cards[2] = cards[1];
+	cards[1] = cards[0];
+	cards[0] = cards[2];
+	cards[2] = cards[1];
+	cards[1] = a_card;
+	puts(cards);
+	return 0;
+}
diff --git a/C/HF/spooky.csv b/C/HF/spooky.csv
new file mode 100644
index 0000000..4846f85
--- /dev/null
+++ b/C/HF/spooky.csv
@@ -0,0 +1,4 @@
+ronaldo curintia
+mulder UFO
+scully Disappearance
+mandinga da braba
diff --git a/C/HF/str.c b/C/HF/str.c
new file mode 100644
index 0000000..f3e635a
--- /dev/null
+++ b/C/HF/str.c
@@ -0,0 +1,33 @@
+#include <stdio.h>
+#include <string.h>
+
+char tracks[][80] = {
+	"I left my heart in MIT",
+	"Newark, Newark",
+	"Dancing with a Doll",
+	"From here to eternity",
+	"The girl from Iwo Jima",
+};
+
+void find_track(char s[])
+{
+	int i = 5;
+
+	for (i = 0; i < 5; i++) {
+		if (strstr(tracks[i], s)) {
+			printf("Found track: %i - %s\n", i, tracks[i]);
+			return;
+		}
+	}
+	printf("Track not found: %s\n", s);
+}
+
+int main(void)
+{
+	char i_str[80];
+
+	printf("Type track: ");
+	gets_s(i_str, 80);
+	find_track(i_str);
+	return 0;
+}
diff --git a/C/HF/ufos.csv b/C/HF/ufos.csv
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/C/HF/ufos.csv