#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 *, float *);
int main(void) {
  float lp100km, kmpl, mpg;
  printf("Enter the number of litres per 100km: ");
  scanf("%f", &lp100km);
  kmpl = 100 / lp100km;
  mpg = 282.48 / lp100km;
  printf("km/L = 100/%.1f = %.2f", lp100km, kmpl);
  printf("\nmi/g = %.2f/%.1f = %.2f\n", 282.48, lp100km, mpg);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xed6(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeef(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
movss  0xeb3(%rip),%xmm0
divss  -0x8(%rbp),%xmm0
movss  %xmm0,-0xc(%rbp)
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm1
movsd  0xe90(%rip),%xmm0
divsd  %xmm1,%xmm0
cvtsd2ss %xmm0,%xmm0
movss  %xmm0,-0x10(%rbp)
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movss  -0xc(%rbp),%xmm1
cvtss2sd %xmm1,%xmm1
lea    0xea0(%rip),%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm1
movss  -0x10(%rbp),%xmm0
cvtss2sd %xmm0,%xmm2
lea    0xe97(%rip),%rdi
movsd  0xe42(%rip),%xmm0
mov    $0x3,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xee8(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xf01(%rip),%rdi
mov    %rsp,%rsi
call   1040 <scanf@plt>
movss  (%rsp),%xmm0
movss  0xeb5(%rip),%xmm1
divss  %xmm0,%xmm1
cvtss2sd %xmm0,%xmm0
movsd  0xead(%rip),%xmm2
divsd  %xmm0,%xmm2
cvtsd2ss %xmm2,%xmm2
movss  %xmm2,0x4(%rsp)
cvtss2sd %xmm1,%xmm1
lea    0xec6(%rip),%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movss  (%rsp),%xmm0
xorps  %xmm1,%xmm1
cvtss2sd %xmm0,%xmm1
movss  0x4(%rsp),%xmm0
xorps  %xmm2,%xmm2
cvtss2sd %xmm0,%xmm2
lea    0xeb6(%rip),%rdi
movsd  0xe65(%rip),%xmm0
mov    $0x3,%al
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [39 x i8] c"Enter the number of litres per 100km: \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [23 x i8] c"km/L = 100/%.1f = %.2f\00"
@.str.3 = [26 x i8] c"\0Ami/g = %.2f/%.1f = %.2f\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
%3 = alloca float
%4 = alloca float
store i32 0, i32* %1
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([39 x i8], [39 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %2)
%7 = load float, float* %2
%8 = fdiv float 1.000000e+02, %7
store float %8, float* %3
%9 = load float, float* %2
%10 = fpext float %9 to double
%11 = fdiv double 2.824800e+02, %10
%12 = fptrunc double %11 to float
store float %12, float* %4
%13 = load float, float* %2
%14 = fpext float %13 to double
%15 = load float, float* %3
%16 = fpext float %15 to double
%17 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0), double %14, double %16)
%18 = load float, float* %2
%19 = fpext float %18 to double
%20 = load float, float* %4
%21 = fpext float %20 to double
%22 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str.3, i64 0, i64 0), double 2.824800e+02, double %19, double %21)
ret i32 0
}

LLVM IR (-O2):
@.str = [39 x i8] c"Enter the number of litres per 100km: \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [23 x i8] c"km/L = 100/%.1f = %.2f\00"
@.str.3 = [26 x i8] c"\0Ami/g = %.2f/%.1f = %.2f\0A\00"
define i32 @main() {
%1 = alloca float
%2 = bitcast float* %1 to i8*
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([39 x i8], [39 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %1)
%5 = load float, float* %1
%6 = fdiv float 1.000000e+02, %5
%7 = fpext float %5 to double
%8 = fdiv double 2.824800e+02, %7
%9 = fptrunc double %8 to float
%10 = fpext float %6 to double
%11 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0), double %7, double %10)
%12 = load float, float* %1
%13 = fpext float %12 to double
%14 = fpext float %9 to double
%15 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @.str.3, i64 0, i64 0), double 2.824800e+02, double %13, double %14)
ret i32 0
}