hex_scan code back

unsigned int a; // Change 'int' to 'unsigned int'

    printf("Enter your number: ");
    scanf("%x", &a); // Now 'a' matches '%x' expected type
    printf("a = %u\n", a); // Use '%u' to correctly print an unsigned int

    return 0;
}

.woodpecker/build.yaml

@@ -0,0 +1,8 @@
+when:
+  - event: [push, pull_request, manual]
+
+steps:
+  - name: build
+    image: masscollabs/build-essential:latest
+    commands:
+      - make

ChangeLog

@@ -1,3 +1,14 @@
+2025-03-21  Mert Gör  <mertgor@masscollabs.xyz>
+
+	* c-basic/CSD-C-Basic-Book/C.pdf: printf fonksiyonunda hem float hem de double türleri %f ile yazdırılır. Ancak scanf fonksiyonunda float %f ile,
+double %lf ile okunur. Örneğin: sayfa 21
+
+2025-03-18  Mert Gör  <mertgor@masscollabs.xyz>
+
+	* c-basic/CSD-C-Basic-Book/C.pdf: sayfa 21 printf fonksiyonundaki format karakterleri scanf fonksiyonunda klavyeden girişi belirlemektedir. Yani örneğin biz
+pir int değeri printf ile %x kullanarak yazdırırsak bu değer 16'lık sistemde ekrana yazdırılır. Fakat bir int değeri
+scanf ile %x ile okumak istersek klavyeden yaptığımız girişin 16'lık sistemde olduğu kabul edilir. Örneğin:
+
 2025-03-08  Mert Gör  <mertgor@masscollabs.xyz>
 
 	* UNIX-Linux/Unix-Linux-SysProg.pdf: Hızlıca incelendi sayfa 126

Makefile

@@ -0,0 +1,13 @@
+CC = gcc
+CFLAGS = -Wall -Wextra -std=c11
+SRCDIR = ./c-basic
+SRC = $(wildcard $(SRCDIR)/*.c)
+OBJ = $(patsubst $(SRCDIR)/%.c, $(SRCDIR)/%.o, $(SRC))
+TARGET = main
+all: $(TARGET)
+$(TARGET): $(OBJ)
+	$(CC) $(CFLAGS) -o $@ $^
+$(SRCDIR)/%.o: $(SRCDIR)/%.c
+	$(CC) $(CFLAGS) -c $< -o $@
+clean:
+	rm -f $(OBJ) $(TARGET)

c-basic/CSD-C-Basic-Book/CSD-C-KaanAslan-links.txt

@@ -1,29 +0,0 @@
-1 - What is UNIX ? What does it mean ?
-
-https://en.wikipedia.org/wiki/Unix
-https://en.wikipedia.org/wiki/Unix#:~:text=In%201970%2C%20the%20group%20coined,of%20the%20final%20spelling%20Unix.
-
-2 - When was the first UNIX developed and which hardware was the first platform for the UNIX.
-
-https://en.wikipedia.org/wiki/History_of_Unix
-https://www.britannica.com/technology/UNIX
-https://www.redhat.com/en/blog/unix-linux-history
-
-3 - What is B programming language and also C programming language ?
-
-https://en.wikipedia.org/wiki/B_(programming_language)
-https://en.wikipedia.org/wiki/C_(programming_language)
-
-4 - What is a "personal computer"(PC) ?
-
-https://en.wikipedia.org/wiki/Personal_computer
-
-Merhaba arkadaşlar
-
-Bugünkü çalışmamızda kaynak toplama hakkında nasıl yol alabileceğimizi göstermek istiyorum.
-
-Kaan Aslan hocamız C dilini UNIX işletim sistemiyle bağlantılı olarak anlatmış ve UNIX işletim sisteminin doğuşu ile bağlantılı olarak tasvir etmiştir.
-
-Wikipedia ve diğer kaynaklardan yararlanıp bilgilerimizi zenginleştireceğiz.
-
-Teşekkürler.

c-basic/cli_arg.c

@@ -1,12 +0,0 @@
-#include <stdio.h>
-int main(int argc, char *argv[])
-{
-
-  int i;
-
-  for (i = 0; i < argc; ++i)
-
-  printf("%s\n", argv[i]);
-
-  return 0;
-}

c-basic/do_while_example_01.c

@@ -1,27 +0,0 @@
-#include <stdio.h>
-#include <ncurses.h>
-
-int main(void)
-{
-
-  char ch;
-
-  do
-{
-
-  printf("(e)vet/(h)ayir?");
-
-  ch = getch();
-  printf("%c\n", ch);
-} while (ch != 'e' && ch != 'h');
-
-  if (ch == 'e')
-
-    printf("evet secildi\n");
-
-  else
-
-    printf("hayir secildi\n");
-
-  return 0;
-}

c-basic/double_example_01.c

@@ -1,16 +0,0 @@
-#include <stdio.h>
-
-int main()
-{
-  double a,b,c;
-  printf("enter double number a:\n");
-  scanf("%lf", &a);
-  printf("enter double number b:\n");
-  scanf("%lf", &b);
-
-  c = a + b;
-
-  printf("%f", c);
-
-  return 0;
-}

c-basic/float_double.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+
+int my_float()
+{
+  float f;
+  double d;
+
+  printf("float :");
+  scanf("%f", &f);
+
+  printf("double :");
+  scanf("%lf", &d);
+
+  printf("f = %f, d = %f", f, d);
+
+  return 0;
+}

c-basic/foo.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int foo()
+{
+  printf("I am foo\n");
+
+  return 0;
+}

c-basic/for_example_01.c

@@ -1,11 +0,0 @@
-#include <stdio.h>
-
-int main(void){
-  int i;
-
-  for (i = 0; i < 10; ++i)
-    printf("%d\n", i);
-
-  return 0;
-  
-}

c-basic/hello.c

@@ -1,8 +1,8 @@
 #include <stdio.h>
 
-int main()
+int hello()
 {
-  printf("Hello World !\n");
+  printf("Hello C Programming Language 2025 Examples\n");
 
   return 0;
 }

c-basic/hex_read_scanf.c

@@ -0,0 +1,15 @@
+#include <stdio.h>
+
+int hex_scan()
+{
+
+  int a;
+
+  printf("Enter a number : ");
+
+  scanf("%x", &a);
+
+  printf("a = %d\n", a);
+
+  return 0;
+}

c-basic/main.c

@@ -0,0 +1,16 @@
+#include <stdio.h>
+
+#ifndef HEX_READ_SCANF_H
+#define HEX_READ_SCANF_H
+
+extern void hex_scan();
+
+#endif // HEX_READ_SCANF_H
+
+int main()
+{
+
+  hex_scan();
+
+  return 0;
+}

c-basic/print_example.c

@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+int print_example()
+{
+  int a = 10, b = 20;
+
+  printf("a = %d, b = %d\n", a, b);
+  printf("a ? = %d, b ? = %d\n", b , a);
+  printf("%d%d\n", a, b);
+
+  return 0;
+}

c-basic/print_example_with_scan.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+
+int print_with_scan()
+{
+  int a , b ;
+
+  printf("enter a number\n");
+  scanf("%d", &a);
+
+  printf("enter b number\n");
+  scanf("%d", &b);
+
+  printf("a is %d\n", a);
+  printf("b is %d\n", b);
+
+  printf("a is %d b is %d\n", a, b);
+  printf("b is %d a is %d\n", b, a);
+  
+  return 0;
+}

c-basic/putchar.c

@@ -1,12 +0,0 @@
-#include <stdio.h>
-#include <ncurses.h>
-
-int main()
-{
-  char ch;
-
-  while ((ch = getch()) != 'q')
-    putchar(ch);
-
-  return 0;
-}

c-basic/scanf_example.c

@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+int my_scan()
+{
+  int a;
+
+  printf("enter the a number:");
+  scanf("%d", &a);
+  printf("a number is : %d\n", a);
+
+  return 0;
+}

c-basic/scanf_example_02.c

@@ -1,15 +0,0 @@
-#include <stdio.h>
-
-int main()
-{
-  int a;
-  int b;
-
-  printf("Enter number a:\n");
-  scanf("%d", &a);
-  printf("Enter number b:\n");
-  scanf("%d", &b);
-  printf("a = %d, b = %d\n", a, b);
-
-  return 0;
-}

c-basic/scanf_example_two_numbers.c

@@ -1,12 +1,12 @@
 #include <stdio.h>
 
-int main()
+int scan_two_numbers()
 {
-  int a;
-  int b;
+  int a, b;
 
-  printf("Enter two numbers:\n");
+  printf("enter two numbers:");
   scanf("%d%d", &a, &b);
+
   printf("a = %d, b = %d\n", a, b);
 
   return 0;

c-basic/toplama.c

@@ -0,0 +1,13 @@
+#include <stdio.h>
+
+int addition()
+{
+  int a , b , c;
+
+  a = 10;
+  b = 20;
+  c = a + b;
+  printf("C = %d", c);
+
+  return 0;
+}

c-basic/while_example_01.c

@@ -1,12 +0,0 @@
-#include <stdio.h>
-
-int main()
-{
-  int i = 0;
-
-  while (i < 10) {
-    printf("%d\n", i);
-    ++i;
-  }
-  return 0;
-}

c-basic/while_example_02.c

@@ -1,13 +0,0 @@
-#include <stdio.h>
-
-int main(void)
-{
-  int i = 10;
-
-  while (i) {
-    printf("%d\n", i);
-    --i;
-  }
-
-  return 0;
-}