#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*/ scanf(char *, int *);
int main(void) {
  printf("请输入想转换的英寸数, 转换边标准(1英寸=2.54cm)");
  printf("\n");
  int inch_value;
  scanf("%d", &inch_value);
  float cm_value;
  cm_value = inch_value * 2.54;
  printf("转换结果, %d英寸= %.2f厘米", inch_value, cm_value);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xed2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf04(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xef8(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
cvtsi2sdl -0x8(%rbp),%xmm0
movsd  0xe98(%rip),%xmm1
mulsd  %xmm1,%xmm0
cvtsd2ss %xmm0,%xmm0
movss  %xmm0,-0xc(%rbp)
mov    -0x8(%rbp),%esi
movss  -0xc(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xec5(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xed0(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
lea    0xef8(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
mov    0x4(%rsp),%esi
cvtsi2sd %esi,%xmm0
mulsd  0xe96(%rip),%xmm0
cvtsd2ss %xmm0,%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xed2(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [64 x i8] c"\E8\AF\B7\E8\BE\93\E5\85\A5\E6\83\B3\E8\BD\AC\E6\8D\A2\E7\9A\84\E8\8B\B1\E5\AF\B8\E6\95\B0, \E8\BD\AC\E6\8D\A2\E8\BE\B9\E6\A0\87\E5\87\86(1\E8\8B\B1\E5\AF\B8=2.54cm)\00"
@.str.1 = [2 x i8] c"\0A\00"
@.str.2 = [3 x i8] c"%d\00"
@.str.3 = [35 x i8] c"\E8\BD\AC\E6\8D\A2\E7\BB\93\E6\9E\9C, %d\E8\8B\B1\E5\AF\B8= %.2f\E5\8E\98\E7\B1\B3\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca float
store i32 0, i32* %1
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([64 x i8], [64 x i8]* @.str, i64 0, i64 0))
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 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 = load i32, i32* %2
%8 = sitofp i32 %7 to double
%9 = fmul double %8, 2.540000e+00
%10 = fptrunc double %9 to float
store float %10, float* %3
%11 = load i32, i32* %2
%12 = load float, float* %3
%13 = fpext float %12 to double
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.3, i64 0, i64 0), i32 %11, double %13)
ret i32 0
}

LLVM IR (-O2):
@.str = [64 x i8] c"\E8\AF\B7\E8\BE\93\E5\85\A5\E6\83\B3\E8\BD\AC\E6\8D\A2\E7\9A\84\E8\8B\B1\E5\AF\B8\E6\95\B0, \E8\BD\AC\E6\8D\A2\E8\BE\B9\E6\A0\87\E5\87\86(1\E8\8B\B1\E5\AF\B8=2.54cm)\00"
@.str.2 = [3 x i8] c"%d\00"
@.str.3 = [35 x i8] c"\E8\BD\AC\E6\8D\A2\E7\BB\93\E6\9E\9C, %d\E8\8B\B1\E5\AF\B8= %.2f\E5\8E\98\E7\B1\B3\00"
define i32 @main() {
%1 = alloca i32
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([64 x i8], [64 x i8]* @.str, i64 0, i64 0))
%3 = tail call i32 @putchar(i32 10)
%4 = bitcast i32* %1 to i8*
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %1)
%6 = load i32, i32* %1
%7 = sitofp i32 %6 to double
%8 = fmul double %7, 2.540000e+00
%9 = fptrunc double %8 to float
%10 = fpext float %9 to double
%11 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([35 x i8], [35 x i8]* @.str.3, i64 0, i64 0), i32 %6, double %10)
ret i32 0
}