#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 gcd(int, int);
int lcm(int, int);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *, int *);
void main() {
  int a, b, c, d;
  printf("请输入两个整数:");
  scanf("%d%d", &a, &b);
  c = gcd(a, b);
  d = lcm(a, b);
  printf("最大公约数是%d,最小公倍数是%d\n", c, d);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xeb1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeba(%rip),%rdi
lea    -0x4(%rbp),%rsi
lea    -0x8(%rbp),%rdx
call   1050 <scanf@plt>
mov    -0x4(%rbp),%edi
mov    -0x8(%rbp),%esi
call   1060 <gcd@plt>
mov    %eax,-0xc(%rbp)
mov    -0x4(%rbp),%edi
mov    -0x8(%rbp),%esi
call   1040 <lcm@plt>
mov    %eax,-0x10(%rbp)
mov    -0xc(%rbp),%esi
mov    -0x10(%rbp),%edx
lea    0xe89(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xeb4(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xebd(%rip),%rdi
lea    0xc(%rsp),%rsi
lea    0x8(%rsp),%rdx
call   1050 <scanf@plt>
mov    0xc(%rsp),%edi
mov    0x8(%rsp),%esi
call   1060 <gcd@plt>
mov    %eax,%ebx
mov    0xc(%rsp),%edi
mov    0x8(%rsp),%esi
call   1040 <lcm@plt>
lea    0xe90(%rip),%rdi
mov    %ebx,%esi
mov    %eax,%edx
xor    %eax,%eax
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [23 x i8] c"\E8\AF\B7\E8\BE\93\E5\85\A5\E4\B8\A4\E4\B8\AA\E6\95\B4\E6\95\B0:\00"
@.str.1 = [5 x i8] c"%d%d\00"
@.str.2 = [43 x i8] c"\E6\9C\80\E5\A4\A7\E5\85\AC\E7\BA\A6\E6\95\B0\E6\98\AF%d,\E6\9C\80\E5\B0\8F\E5\85\AC\E5\80\8D\E6\95\B0\E6\98\AF%d\0A\00"
define void @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32* %1, i32* %2)
%7 = load i32, i32* %1
%8 = load i32, i32* %2
%9 = call i32 @gcd(i32 %7, i32 %8)
store i32 %9, i32* %3
%10 = load i32, i32* %1
%11 = load i32, i32* %2
%12 = call i32 @lcm(i32 %10, i32 %11)
store i32 %12, i32* %4
%13 = load i32, i32* %3
%14 = load i32, i32* %4
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([43 x i8], [43 x i8]* @.str.2, i64 0, i64 0), i32 %13, i32 %14)
ret void
}

LLVM IR (-O2):
@.str = [23 x i8] c"\E8\AF\B7\E8\BE\93\E5\85\A5\E4\B8\A4\E4\B8\AA\E6\95\B4\E6\95\B0:\00"
@.str.1 = [5 x i8] c"%d%d\00"
@.str.2 = [43 x i8] c"\E6\9C\80\E5\A4\A7\E5\85\AC\E7\BA\A6\E6\95\B0\E6\98\AF%d,\E6\9C\80\E5\B0\8F\E5\85\AC\E5\80\8D\E6\95\B0\E6\98\AF%d\0A\00"
define void @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
%4 = bitcast i32* %2 to i8*
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32* %1, i32* %2)
%7 = load i32, i32* %1
%8 = load i32, i32* %2
%9 = call i32 @gcd(i32 %7, i32 %8)
%10 = load i32, i32* %1
%11 = load i32, i32* %2
%12 = call i32 @lcm(i32 %10, i32 %11)
%13 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([43 x i8], [43 x i8]* @.str.2, i64 0, i64 0), i32 %9, i32 %12)
ret void
}