Beispiele 26.9.2022

20220926/hello-01-O.s

+	.file	"hello-01.c"
+	.text
+	.section	.rodata.str1.1,"aMS",@progbits,1
+.LC0:
+	.string	"Hello, world!"
+	.text
+	.globl	main
+	.type	main, @function
+main:
+.LFB11:
+	.cfi_startproc
+	subq	$8, %rsp
+	.cfi_def_cfa_offset 16
+	leaq	.LC0(%rip), %rdi
+	call	puts@PLT
+	movl	$0, %eax
+	addq	$8, %rsp
+	.cfi_def_cfa_offset 8
+	ret
+	.cfi_endproc
+.LFE11:
+	.size	main, .-main
+	.ident	"GCC: (Debian 8.3.0-6) 8.3.0"
+	.section	.note.GNU-stack,"",@progbits

20220926/hello-01.c

+#include <stdio.h>
+
+int main (void)
+{
+  printf ("Hello, world!\n");
+  return 0;
+}

20220926/hello-01.s

+	.file	"hello-01.c"
+	.text
+	.section	.rodata
+.LC0:
+	.string	"Hello, world!"
+	.text
+	.globl	main
+	.type	main, @function
+main:
+.LFB0:
+	.cfi_startproc                          ; .cfi_startproc
+	pushq	%rbp                            ; subq	$8, %rsp
+	.cfi_def_cfa_offset 16                  ; .cfi_def_cfa_offset 16
+	.cfi_offset 6, -16                      ; leaq	.LC0(%rip), %rdi
+	movq	%rsp, %rbp                      ; call	puts@PLT
+	.cfi_def_cfa_register 6                 ; movl	$0, %eax
+	leaq	.LC0(%rip), %rdi                ; addq	$8, %rsp
+	call	puts@PLT                        ; .cfi_def_cfa_offset 8
+	movl	$0, %eax                        ; ret
+	popq	%rbp                            ; .cfi_endproc
+	.cfi_def_cfa 7, 8
+	ret
+	.cfi_endproc
+.LFE0:
+	.size	main, .-main
+	.ident	"GCC: (Debian 8.3.0-6) 8.3.0"
+	.section	.note.GNU-stack,"",@progbits

20220926/hello-02.c

+#include <stdio.h>
+
+int main (void)
+{
+  printf ("Hello, world!");
+  return 0;
+}

20220926/hello-03.c

+#include <stdio.h>
+
+int main (void)
+{
+  printf ("Die Antwort lautet: ");
+  printf (42);
+  printf ("\n");
+  return 0;
+}

20220926/hello-04.c

+#include <stdio.h>
+
+int main (void)
+{
+  printf ("Die Antwort lautet: ");
+  printf ("42");
+  printf ("\n");
+  return 0;
+}

20220926/hello-05.c

+#include <stdio.h>
+
+int main (void)
+{
+  printf ("Die Antwort lautet: %d\n", 42);
+  return 0;
+}

20220926/hello-06.c

+#include <stdio.h>
+
+int main (void)
+{
+  int answer = 42;
+  printf ("Die Antwort lautet: %d\n", answer);
+  return 0;
+}

20220926/input-01.c

+#include <stdio.h>
+
+int main (void)
+{
+  double a;
+  printf ("Bitte eine Zahl eingeben: ");
+  scanf ("%lf", &a);
+  printf ("Ihre Antwort war: %lf\n", a);
+  return 0;
+}

20220926/input-02.c

+#include <stdio.h>
+
+int main (void)
+{
+  double a;
+  printf ("Bitte eine Zahl eingeben: ");
+  scanf ("%lf", a);
+  printf ("Ihre Antwort war: %lf\n", a);
+  return 0;
+}

20220926/input-03.c

+#include <stdio.h>
+
+int main (void)
+{
+  double a;
+  printf ("Bitte eine Zahl eingeben: ");
+  scanf ("%lf", &a);
+  a = 2 * a;
+  printf ("Das Doppelte ist: %lf\n", a);
+  return 0;
+}

20220926/input-04.c

+#include <stdio.h>
+
+int main (void)
+{
+  double a = 3.14;
+  printf ("Das Doppelte von %lf ist: %lf\n", a, 2 * a);
+  return 0;
+}

20220926/input-05.c

+#include <stdio.h>
+
+int main (void)
+{
+  double a;
+  a = 3.14;
+  printf ("Das Doppelte von %lf ist: %lf\n", a, 2 * a);
+  return 0;
+}