#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() {
  float degC, degF;
  printf("Enter the temperature in degree Celcius: ");
  scanf("%f", &degC);
  degF = (9 * degC) / 5 + 32;
  printf("%.2f degC in degF is %.2f\n", degC, degF);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xedd(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xef9(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1040 <scanf@plt>
movss  0xeba(%rip),%xmm0
mulss  -0x4(%rbp),%xmm0
movss  0xea9(%rip),%xmm1
divss  %xmm1,%xmm0
movss  0xe99(%rip),%xmm1
addss  %xmm1,%xmm0
movss  %xmm0,-0x8(%rbp)
movss  -0x4(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movss  -0x8(%rbp),%xmm1
cvtss2sd %xmm1,%xmm1
lea    0xeb0(%rip),%rdi
mov    $0x2,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xee4(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xf00(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
movss  0x4(%rsp),%xmm0
movss  0xeb2(%rip),%xmm1
mulss  %xmm0,%xmm1
divss  0xeaa(%rip),%xmm1
addss  0xea6(%rip),%xmm1
cvtss2sd %xmm0,%xmm0
cvtss2sd %xmm1,%xmm1
lea    0xec8(%rip),%rdi
mov    $0x2,%al
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [42 x i8] c"Enter the temperature in degree Celcius: \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [27 x i8] c"%.2f degC in degF is %.2f\0A\00"
define i32 @main() {
%1 = alloca float
%2 = alloca float
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([42 x i8], [42 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 = fmul float 9.000000e+00, %5
%7 = fdiv float %6, 5.000000e+00
%8 = fadd float %7, 3.200000e+01
store float %8, float* %2
%9 = load float, float* %1
%10 = fpext float %9 to double
%11 = load float, float* %2
%12 = fpext float %11 to double
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.2, i64 0, i64 0), double %10, double %12)
ret i32 0
}

LLVM IR (-O2):
@.str = [42 x i8] c"Enter the temperature in degree Celcius: \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [27 x i8] c"%.2f degC in degF is %.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 ([42 x i8], [42 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 = fmul float %5, 9.000000e+00
%7 = fdiv float %6, 5.000000e+00
%8 = fadd float %7, 3.200000e+01
%9 = fpext float %5 to double
%10 = fpext float %8 to double
%11 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([27 x i8], [27 x i8]* @.str.2, i64 0, i64 0), double %9, double %10)
ret i32 0
}