#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 *);
int main(void) {
  int a, b;
  printf("ÇëÊäÈëÁ½¸öÕûÊý£º\n");
  scanf("%i %i", &a, &b);
  if (b == 0)
    printf("³ýÊý²»ÄÜÎª0.");
  else
    printf("%i³ýÒÔ%iµÄ½á¹ûÎª£º%.3f", a, b, (float)a / b);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xede(%rip),%rdi
lea    -0x8(%rbp),%rsi
lea    -0xc(%rbp),%rdx
call   1040 <scanf@plt>
cmpl   $0x0,-0xc(%rbp)
jne    116e <main+0x4e>
lea    0xec6(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    1194 <main+0x74>
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
cvtsi2ssl -0x8(%rbp),%xmm0
cvtsi2ssl -0xc(%rbp),%xmm1
divss  %xmm1,%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xeb2(%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    0xf0a(%rip),%rdi
call   1030 <puts@plt>
lea    0xebc(%rip),%rdi
lea    0x4(%rsp),%rsi
mov    %rsp,%rdx
call   1050 <scanf@plt>
mov    (%rsp),%edx
test   %edx,%edx
je     117c <main+0x4c>
mov    0x4(%rsp),%esi
cvtsi2ss %esi,%xmm0
cvtsi2ss %edx,%xmm1
divss  %xmm1,%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xeaa(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
jmp    118a <main+0x5a>
lea    0xe83(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [34 x i8] c"\C3\87\C3\AB\C3\8A\C3\A4\C3\88\C3\AB\C3\81\C2\BD\C2\B8\C3\B6\C3\95\C3\BB\C3\8A\C3\BD\C2\A3\C2\BA\0A\00"
@.str.1 = [6 x i8] c"%i %i\00"
@.str.2 = [23 x i8] c"\C2\B3\C3\BD\C3\8A\C3\BD\C2\B2\C2\BB\C3\84\C3\9C\C3\8E\C2\AA0.\00"
@.str.3 = [37 x i8] c"%i\C2\B3\C3\BD\C3\92\C3\94%i\C2\B5\C3\84\C2\BD\C3\A1\C2\B9\C3\BB\C3\8E\C2\AA\C2\A3\C2\BA%.3f\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i32* %2, i32* %3)
%6 = load i32, i32* %3
%7 = icmp eq i32 %6, 0
br i1 %7, label %8, label %10
8: ; preds = %0
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0))
br label %20
10: ; preds = %0
%11 = load i32, i32* %2
%12 = load i32, i32* %3
%13 = load i32, i32* %2
%14 = sitofp i32 %13 to float
%15 = load i32, i32* %3
%16 = sitofp i32 %15 to float
%17 = fdiv float %14, %16
%18 = fpext float %17 to double
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str.3, i64 0, i64 0), i32 %11, i32 %12, double %18)
br label %20
20: ; preds = %10, %8
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [6 x i8] c"%i %i\00"
@.str.2 = [23 x i8] c"\C2\B3\C3\BD\C3\8A\C3\BD\C2\B2\C2\BB\C3\84\C3\9C\C3\8E\C2\AA0.\00"
@.str.3 = [37 x i8] c"%i\C2\B3\C3\BD\C3\92\C3\94%i\C2\B5\C3\84\C2\BD\C3\A1\C2\B9\C3\BB\C3\8E\C2\AA\C2\A3\C2\BA%.3f\00"
@str = [33 x i8] c"\C3\87\C3\AB\C3\8A\C3\A4\C3\88\C3\AB\C3\81\C2\BD\C2\B8\C3\B6\C3\95\C3\BB\C3\8A\C3\BD\C2\A3\C2\BA\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 ([33 x i8], [33 x i8]* @str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i32* %1, i32* %2)
%7 = load i32, i32* %2
%8 = icmp eq i32 %7, 0
br i1 %8, label %9, label %11
9: ; preds = %0
%10 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0))
br label %18
11: ; preds = %0
%12 = load i32, i32* %1
%13 = sitofp i32 %12 to float
%14 = sitofp i32 %7 to float
%15 = fdiv float %13, %14
%16 = fpext float %15 to double
%17 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([37 x i8], [37 x i8]* @.str.3, i64 0, i64 0), i32 %12, i32 %7, double %16)
br label %18
18: ; preds = %11, %9
ret i32 0
}