#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*/ clrscr();
int /*<<< orphan*/ getch();
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, float *);
void main() {
  float c, f;
  clrscr();
  printf("temperature in celcius:");
  scanf("%f", &c);
  f = (c * (9.0 / 5.0)) + 32;
  printf("\ntemperature in fahrenheit is: %.2f", f);
  getch();
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    $0x0,%al
call   1030 <clrscr@plt>
lea    0xeba(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xec4(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1050 <scanf@plt>
movss  -0x4(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  0xe82(%rip),%xmm1
mulsd  %xmm1,%xmm0
movsd  0xe7e(%rip),%xmm1
addsd  %xmm1,%xmm0
cvtsd2ss %xmm0,%xmm0
movss  %xmm0,-0x8(%rbp)
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xe84(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    $0x0,%al
call   1060 <getch@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
xor    %eax,%eax
call   1030 <clrscr@plt>
lea    0xec1(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xecb(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
movss  0x4(%rsp),%xmm0
cvtss2sd %xmm0,%xmm0
mulsd  0xe87(%rip),%xmm0
addsd  0xe87(%rip),%xmm0
cvtsd2ss %xmm0,%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xe9b(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
xor    %eax,%eax
call   1060 <getch@plt>
pop    %rax
ret

LLVM IR (-O0):
@.str = [24 x i8] c"temperature in celcius:\00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [36 x i8] c"\0Atemperature in fahrenheit is: %.2f\00"
define void @main() {
%1 = alloca float
%2 = alloca float
%3 = call i32 (...) @clrscr()
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %1)
%6 = load float, float* %1
%7 = fpext float %6 to double
%8 = call double @llvm.fmuladd.f64(double %7, double 1.800000e+00, double 3.200000e+01)
%9 = fptrunc double %8 to float
store float %9, float* %2
%10 = load float, float* %2
%11 = fpext float %10 to double
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.2, i64 0, i64 0), double %11)
%13 = call i32 (...) @getch()
ret void
}

LLVM IR (-O2):
@.str = [24 x i8] c"temperature in celcius:\00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [36 x i8] c"\0Atemperature in fahrenheit is: %.2f\00"
define void @main() {
%1 = alloca float
%2 = bitcast float* %1 to i8*
%3 = tail call i32 (...) @clrscr()
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %1)
%6 = load float, float* %1
%7 = fpext float %6 to double
%8 = call double @llvm.fmuladd.f64(double %7, double 1.800000e+00, double 3.200000e+01)
%9 = fptrunc double %8 to float
%10 = fpext float %9 to double
%11 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([36 x i8], [36 x i8]* @.str.2, i64 0, i64 0), double %10)
%12 = call i32 (...) @getch()
ret void
}