#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int /*<<< orphan*/ oct2bin(unsigned int);
int /*<<< orphan*/ printf(char *);
int /*<<< orphan*/ scanf(char *, unsigned int *);
int /*<<< orphan*/ tobin(unsigned int);
int /*<<< orphan*/ tooct(unsigned int);
int main() {
  unsigned oct, dec;
  printf("Enter a decimal number:\n");
  scanf(" %u%*c", &dec);
  tooct(dec);
  tobin(dec);
  printf("Enter an octal number:\n");
  scanf(" %u%*c", &oct);
  oct2bin(oct);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xe9a(%rip),%rdi
call   1050 <printf@plt>
lea    0xea7(%rip),%rdi
lea    -0xc(%rbp),%rsi
call   1060 <scanf@plt>
mov    -0xc(%rbp),%edi
call   1040 <tooct@plt>
mov    -0xc(%rbp),%edi
call   1070 <tobin@plt>
lea    0xe8e(%rip),%rdi
call   1050 <printf@plt>
lea    0xe7b(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1060 <scanf@plt>
mov    -0x8(%rbp),%edi
call   1030 <oct2bin@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xeab(%rip),%rdi
call   1040 <puts@plt>
lea    0xe98(%rip),%rbx
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1060 <scanf@plt>
mov    0x8(%rsp),%edi
call   1050 <tooct@plt>
mov    0x8(%rsp),%edi
call   1070 <tobin@plt>
lea    0xe91(%rip),%rdi
call   1040 <puts@plt>
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1060 <scanf@plt>
mov    0xc(%rsp),%edi
call   1030 <oct2bin@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [25 x i8] c"Enter a decimal number:\0A\00"
@.str.1 = [7 x i8] c" %u%*c\00"
@.str.2 = [24 x i8] c"Enter an octal number:\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
%4 = call i32 @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0), i32* %3)
%6 = load i32, i32* %3
%7 = call i32 @tooct(i32 %6)
%8 = load i32, i32* %3
%9 = call i32 @tobin(i32 %8)
%10 = call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.2, i64 0, i64 0))
%11 = call i32 @scanf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%12 = load i32, i32* %2
%13 = call i32 @oct2bin(i32 %12)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [7 x i8] c" %u%*c\00"
@str = [24 x i8] c"Enter a decimal number:\00"
@str.3 = [23 x i8] c"Enter an octal number:\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
%4 = bitcast i32* %2 to i8*
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%7 = load i32, i32* %2
%8 = call i32 @tooct(i32 %7)
%9 = load i32, i32* %2
%10 = call i32 @tobin(i32 %9)
%11 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @str.3, i64 0, i64 0))
%12 = call i32 @scanf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%13 = load i32, i32* %1
%14 = call i32 @oct2bin(i32 %13)
ret i32 0
}