From b256c9fe741ea03af2d3ac09be5fba029f1028cd Mon Sep 17 00:00:00 2001 From: Peter Gerwinski <peter.gerwinski@hs-bochum.de> Date: Mon, 15 Nov 2021 14:17:33 +0100 Subject: [PATCH] Beispiel-Programme 15.11.2021 --- 20211115/addresses-1.c | 10 ++++++++++ 20211115/addresses-2.c | 18 ++++++++++++++++++ 20211115/addresses-3.c | 18 ++++++++++++++++++ 20211115/addresses-4.c | 18 ++++++++++++++++++ 20211115/addresses-5.c | 18 ++++++++++++++++++ 20211115/addresses-6.c | 18 ++++++++++++++++++ 20211115/arrays-pointers-1.c | 9 +++++++++ 20211115/arrays-pointers-10.c | 9 +++++++++ 20211115/arrays-pointers-11.c | 9 +++++++++ 20211115/arrays-pointers-12.c | 9 +++++++++ 20211115/arrays-pointers-13.c | 8 ++++++++ 20211115/arrays-pointers-14.c | 9 +++++++++ 20211115/arrays-pointers-15.c | 9 +++++++++ 20211115/arrays-pointers-16.c | 9 +++++++++ 20211115/arrays-pointers-17.c | 9 +++++++++ 20211115/arrays-pointers-18.c | 8 ++++++++ 20211115/arrays-pointers-19.c | 9 +++++++++ 20211115/arrays-pointers-2.c | 9 +++++++++ 20211115/arrays-pointers-3.c | 9 +++++++++ 20211115/arrays-pointers-4.c | 10 ++++++++++ 20211115/arrays-pointers-5.c | 9 +++++++++ 20211115/arrays-pointers-6.c | 11 +++++++++++ 20211115/arrays-pointers-7.c | 11 +++++++++++ 20211115/arrays-pointers-8.c | 11 +++++++++++ 20211115/arrays-pointers-9.c | 11 +++++++++++ 25 files changed, 278 insertions(+) create mode 100644 20211115/addresses-1.c create mode 100644 20211115/addresses-2.c create mode 100644 20211115/addresses-3.c create mode 100644 20211115/addresses-4.c create mode 100644 20211115/addresses-5.c create mode 100644 20211115/addresses-6.c create mode 100644 20211115/arrays-pointers-1.c create mode 100644 20211115/arrays-pointers-10.c create mode 100644 20211115/arrays-pointers-11.c create mode 100644 20211115/arrays-pointers-12.c create mode 100644 20211115/arrays-pointers-13.c create mode 100644 20211115/arrays-pointers-14.c create mode 100644 20211115/arrays-pointers-15.c create mode 100644 20211115/arrays-pointers-16.c create mode 100644 20211115/arrays-pointers-17.c create mode 100644 20211115/arrays-pointers-18.c create mode 100644 20211115/arrays-pointers-19.c create mode 100644 20211115/arrays-pointers-2.c create mode 100644 20211115/arrays-pointers-3.c create mode 100644 20211115/arrays-pointers-4.c create mode 100644 20211115/arrays-pointers-5.c create mode 100644 20211115/arrays-pointers-6.c create mode 100644 20211115/arrays-pointers-7.c create mode 100644 20211115/arrays-pointers-8.c create mode 100644 20211115/arrays-pointers-9.c diff --git a/20211115/addresses-1.c b/20211115/addresses-1.c new file mode 100644 index 0000000..935be56 --- /dev/null +++ b/20211115/addresses-1.c @@ -0,0 +1,10 @@ +#include <stdio.h> +#include <stdint.h> + +int main (void) +{ + char *hello = "Hello, world!"; + uint64_t a = hello; + printf ("a = %lu\n", a); + return 0; +} diff --git a/20211115/addresses-2.c b/20211115/addresses-2.c new file mode 100644 index 0000000..338bbbc --- /dev/null +++ b/20211115/addresses-2.c @@ -0,0 +1,18 @@ +#include <stdio.h> +#include <stdint.h> + +int main (void) +{ + char *hello = "Hello, world!"; + uint64_t a = hello; + uint32_t b = hello; + uint16_t c = hello; + uint8_t d = hello; + char e = hello; + printf ("a = %lu\n", a); + printf ("b = %u\n", b); + printf ("c = %hu\n", c); + printf ("d = %hhu\n", d); + printf ("e = %d\n", e); + return 0; +} diff --git a/20211115/addresses-3.c b/20211115/addresses-3.c new file mode 100644 index 0000000..58bf55d --- /dev/null +++ b/20211115/addresses-3.c @@ -0,0 +1,18 @@ +#include <stdio.h> +#include <stdint.h> + +int main (void) +{ + char *hello = "Hello, world!"; + uint64_t a = hello; + uint32_t b = hello; + uint16_t c = hello; + uint8_t d = hello; + char e = hello; + printf ("a = %016lx\n", a); + printf ("b = %08x\n", b); + printf ("c = %04x\n", c); + printf ("d = %02x\n", d); + printf ("e = %02x\n", e); + return 0; +} diff --git a/20211115/addresses-4.c b/20211115/addresses-4.c new file mode 100644 index 0000000..3b9d9f3 --- /dev/null +++ b/20211115/addresses-4.c @@ -0,0 +1,18 @@ +#include <stdio.h> +#include <stdint.h> + +int main (void) +{ + char *hello = "Hello, world!"; + uint64_t a = (uint64_t) hello; + uint32_t b = (uint32_t) hello; + uint16_t c = (uint16_t) hello; + uint8_t d = (uint8_t) hello; + char e = (char) hello; + printf ("a = %016lx\n", a); + printf ("b = %08x\n", b); + printf ("c = %04x\n", c); + printf ("d = %02x\n", d); + printf ("e = %02x\n", e); + return 0; +} diff --git a/20211115/addresses-5.c b/20211115/addresses-5.c new file mode 100644 index 0000000..8854d92 --- /dev/null +++ b/20211115/addresses-5.c @@ -0,0 +1,18 @@ +#include <stdio.h> +#include <stdint.h> + +int main (void) +{ + char *hello = "Hello, world!"; + uint64_t a = (uint64_t) hello; + uint32_t b = (uint64_t) hello; + uint16_t c = (uint64_t) hello; + uint8_t d = (uint64_t) hello; + char e = (uint64_t) hello; + printf ("a = %016lx\n", a); + printf ("b = %08x\n", b); + printf ("c = %04x\n", c); + printf ("d = %02x\n", d); + printf ("e = %02x\n", e); + return 0; +} diff --git a/20211115/addresses-6.c b/20211115/addresses-6.c new file mode 100644 index 0000000..6f11d43 --- /dev/null +++ b/20211115/addresses-6.c @@ -0,0 +1,18 @@ +#include <stdio.h> +#include <stdint.h> + +int main (void) +{ + char *hello = "Hello, world!"; + uint64_t a = (size_t) hello; + uint32_t b = (size_t) hello; + uint16_t c = (size_t) hello; + uint8_t d = (size_t) hello; + char e = (size_t) hello; + printf ("a = %016lx\n", a); + printf ("b = %08x\n", b); + printf ("c = %04x\n", c); + printf ("d = %02x\n", d); + printf ("e = %02x\n", e); + return 0; +} diff --git a/20211115/arrays-pointers-1.c b/20211115/arrays-pointers-1.c new file mode 100644 index 0000000..331e8d3 --- /dev/null +++ b/20211115/arrays-pointers-1.c @@ -0,0 +1,9 @@ +#include <stdio.h> + +int main (void) +{ + char hello[] = "Hello, world!"; + char *p = hello; + printf ("%s\n", p); + return 0; +} diff --git a/20211115/arrays-pointers-10.c b/20211115/arrays-pointers-10.c new file mode 100644 index 0000000..059013b --- /dev/null +++ b/20211115/arrays-pointers-10.c @@ -0,0 +1,9 @@ +#include <stdio.h> + +int main (void) +{ + char *hello = "Hello, world!"; + char *p = hello; + printf ("%s\n", p); + return 0; +} diff --git a/20211115/arrays-pointers-11.c b/20211115/arrays-pointers-11.c new file mode 100644 index 0000000..c59ae2c --- /dev/null +++ b/20211115/arrays-pointers-11.c @@ -0,0 +1,9 @@ +#include <stdio.h> + +int main (void) +{ + char *hello = "Hello, world!"; + char p[] = { hello }; + printf ("%s\n", p); + return 0; +} diff --git a/20211115/arrays-pointers-12.c b/20211115/arrays-pointers-12.c new file mode 100644 index 0000000..5a1f2bb --- /dev/null +++ b/20211115/arrays-pointers-12.c @@ -0,0 +1,9 @@ +#include <stdio.h> + +int main (void) +{ + char *hello = "Hello, world!"; + char p[] = { hello }; /* ein Element des Arrays initialisieren */ + printf ("%s\n", p); + return 0; +} diff --git a/20211115/arrays-pointers-13.c b/20211115/arrays-pointers-13.c new file mode 100644 index 0000000..ef79bf6 --- /dev/null +++ b/20211115/arrays-pointers-13.c @@ -0,0 +1,8 @@ +#include <stdio.h> + +int main (void) +{ + char p[14] = { '*' }; /* ein Element des Arrays initialisieren */ + printf ("%s\n", p); + return 0; +} diff --git a/20211115/arrays-pointers-14.c b/20211115/arrays-pointers-14.c new file mode 100644 index 0000000..aa6c117 --- /dev/null +++ b/20211115/arrays-pointers-14.c @@ -0,0 +1,9 @@ +#include <stdio.h> + +int main (void) +{ + char *hello = "Hello, world!"; + char *p[14] = { hello }; /* ein Element des Arrays initialisieren */ + printf ("%s\n", p[1]); + return 0; +} diff --git a/20211115/arrays-pointers-15.c b/20211115/arrays-pointers-15.c new file mode 100644 index 0000000..fa859c0 --- /dev/null +++ b/20211115/arrays-pointers-15.c @@ -0,0 +1,9 @@ +#include <stdio.h> + +int main (void) +{ + char *hello = "Hello, world!"; + char *p[14] = { hello }; /* ein Element des Arrays initialisieren */ + printf ("%s\n", p[0]); + return 0; +} diff --git a/20211115/arrays-pointers-16.c b/20211115/arrays-pointers-16.c new file mode 100644 index 0000000..2ac4390 --- /dev/null +++ b/20211115/arrays-pointers-16.c @@ -0,0 +1,9 @@ +#include <stdio.h> + +int main (void) +{ + char *hello = "Hello, world!"; + char p[] = { hello - 150 }; /* ein Element des Arrays initialisieren */ + printf ("%s\n", p); + return 0; +} diff --git a/20211115/arrays-pointers-17.c b/20211115/arrays-pointers-17.c new file mode 100644 index 0000000..d290e79 --- /dev/null +++ b/20211115/arrays-pointers-17.c @@ -0,0 +1,9 @@ +#include <stdio.h> + +int main (void) +{ + char *hello = "Hello, world!"; + char p[] = { hello + 'a' }; /* ein Element des Arrays initialisieren */ + printf ("%s\n", p); + return 0; +} diff --git a/20211115/arrays-pointers-18.c b/20211115/arrays-pointers-18.c new file mode 100644 index 0000000..8d39757 --- /dev/null +++ b/20211115/arrays-pointers-18.c @@ -0,0 +1,8 @@ +#include <stdio.h> + +int main (void) +{ + char p[] = { 4 + 'a' }; /* ein Element des Arrays initialisieren */ + printf ("%s\n", p); + return 0; +} diff --git a/20211115/arrays-pointers-19.c b/20211115/arrays-pointers-19.c new file mode 100644 index 0000000..e975ca5 --- /dev/null +++ b/20211115/arrays-pointers-19.c @@ -0,0 +1,9 @@ +#include <stdio.h> + +int main (void) +{ + char *hello = "Hallo, Welt!"; + char p[] = { hello + 'a' }; /* ein Element des Arrays initialisieren */ + printf ("%s\n", p); + return 0; +} diff --git a/20211115/arrays-pointers-2.c b/20211115/arrays-pointers-2.c new file mode 100644 index 0000000..42e0f3d --- /dev/null +++ b/20211115/arrays-pointers-2.c @@ -0,0 +1,9 @@ +#include <stdio.h> + +int main (void) +{ + char *hello = "Hello, world!"; + char p[] = hello; + printf ("%s\n", p); + return 0; +} diff --git a/20211115/arrays-pointers-3.c b/20211115/arrays-pointers-3.c new file mode 100644 index 0000000..7f489cc --- /dev/null +++ b/20211115/arrays-pointers-3.c @@ -0,0 +1,9 @@ +#include <stdio.h> + +int main (void) +{ + int a = 3; + int b = a; + printf ("%d\n", b); + return 0; +} diff --git a/20211115/arrays-pointers-4.c b/20211115/arrays-pointers-4.c new file mode 100644 index 0000000..9e9335e --- /dev/null +++ b/20211115/arrays-pointers-4.c @@ -0,0 +1,10 @@ +#include <stdio.h> + +int a = 3; +int b = a; + +int main (void) +{ + printf ("%d\n", b); + return 0; +} diff --git a/20211115/arrays-pointers-5.c b/20211115/arrays-pointers-5.c new file mode 100644 index 0000000..e805a37 --- /dev/null +++ b/20211115/arrays-pointers-5.c @@ -0,0 +1,9 @@ +#include <stdio.h> + +int main (void) +{ + char *hello = "Hello, world!"; + char p[13] = hello; + printf ("%s\n", p); + return 0; +} diff --git a/20211115/arrays-pointers-6.c b/20211115/arrays-pointers-6.c new file mode 100644 index 0000000..0b6560d --- /dev/null +++ b/20211115/arrays-pointers-6.c @@ -0,0 +1,11 @@ +#include <stdio.h> +#include <string.h> + +int main (void) +{ + char *hello = "Hello, world!"; + char p[13]; + strcpy (p, hello); + printf ("%s\n", p); + return 0; +} diff --git a/20211115/arrays-pointers-7.c b/20211115/arrays-pointers-7.c new file mode 100644 index 0000000..26a064b --- /dev/null +++ b/20211115/arrays-pointers-7.c @@ -0,0 +1,11 @@ +#include <stdio.h> +#include <string.h> + +int main (void) +{ + char *hello = "Hello, world!"; + char p[14]; + strcpy (p, hello); + printf ("%s\n", p); + return 0; +} diff --git a/20211115/arrays-pointers-8.c b/20211115/arrays-pointers-8.c new file mode 100644 index 0000000..928ecb4 --- /dev/null +++ b/20211115/arrays-pointers-8.c @@ -0,0 +1,11 @@ +#include <stdio.h> +#include <string.h> + +int main (void) +{ + char *hello = "Hello, world!"; + char p[14]; + strcpy (p, hello); + printf ("%c\n", p); + return 0; +} diff --git a/20211115/arrays-pointers-9.c b/20211115/arrays-pointers-9.c new file mode 100644 index 0000000..ebeae79 --- /dev/null +++ b/20211115/arrays-pointers-9.c @@ -0,0 +1,11 @@ +#include <stdio.h> +#include <string.h> + +int main (void) +{ + char *hello = "Hello, world!"; + char p[14]; + strcpy (p, hello); + printf ("%c\n", p[1]); + return 0; +} -- GitLab