#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*/ printf(char *, ...);
int /*<<< orphan*/ puts(char *);
int /*<<< orphan*/ scanf(char *, int *);
int main(void) {
  int x = 0, y = 0;
  puts("请输入两个整数。");
  printf("整数1：");
  scanf("%d", &x);
  printf("整数2：");
  scanf("%d", &y);
  printf("它们的乘积是：%d。\n", x * y);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
movl   $0x0,-0xc(%rbp)
lea    0xeac(%rip),%rdi
call   1030 <puts@plt>
lea    0xeb9(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xeb6(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1050 <scanf@plt>
lea    0xea9(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xe98(%rip),%rdi
lea    -0xc(%rbp),%rsi
call   1050 <scanf@plt>
mov    -0x8(%rbp),%esi
imul   -0xc(%rbp),%esi
lea    0xe8f(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
movl   $0x0,0xc(%rsp)
movl   $0x0,0x8(%rsp)
lea    0xeb4(%rip),%rdi
call   1030 <puts@plt>
lea    0xec1(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xebe(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
lea    0xead(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
mov    0x8(%rsp),%esi
imul   0xc(%rsp),%esi
lea    0xe94(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [25 x i8] c"\E8\AF\B7\E8\BE\93\E5\85\A5\E4\B8\A4\E4\B8\AA\E6\95\B4\E6\95\B0\E3\80\82\00"
@.str.1 = [11 x i8] c"\E6\95\B4\E6\95\B01\EF\BC\9A\00"
@.str.2 = [3 x i8] c"%d\00"
@.str.3 = [11 x i8] c"\E6\95\B4\E6\95\B02\EF\BC\9A\00"
@.str.4 = [28 x i8] c"\E5\AE\83\E4\BB\AC\E7\9A\84\E4\B9\98\E7\A7\AF\E6\98\AF\EF\BC\9A%d\E3\80\82\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
store i32 0, i32* %3
%4 = call i32 @puts(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %2)
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.3, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %3)
%9 = load i32, i32* %2
%10 = load i32, i32* %3
%11 = mul nsw i32 %9, %10
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.4, i64 0, i64 0), i32 %11)
ret i32 0
}

LLVM IR (-O2):
@.str = [25 x i8] c"\E8\AF\B7\E8\BE\93\E5\85\A5\E4\B8\A4\E4\B8\AA\E6\95\B4\E6\95\B0\E3\80\82\00"
@.str.1 = [11 x i8] c"\E6\95\B4\E6\95\B01\EF\BC\9A\00"
@.str.2 = [3 x i8] c"%d\00"
@.str.3 = [11 x i8] c"\E6\95\B4\E6\95\B02\EF\BC\9A\00"
@.str.4 = [28 x i8] c"\E5\AE\83\E4\BB\AC\E7\9A\84\E4\B9\98\E7\A7\AF\E6\98\AF\EF\BC\9A%d\E3\80\82\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
store i32 0, i32* %1
%4 = bitcast i32* %2 to i8*
store i32 0, i32* %2
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %1)
%8 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @.str.3, i64 0, i64 0))
%9 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %2)
%10 = load i32, i32* %1
%11 = load i32, i32* %2
%12 = mul nsw i32 %11, %10
%13 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([28 x i8], [28 x i8]* @.str.4, i64 0, i64 0), i32 %12)
ret i32 0
}