#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 *);
main() {
  float area, CPraio;
  float const pi = 3.14;
  printf(" \n [-- Calculando area de um circulo --] \n");
  printf("\nPor favor digite o comprimento do raio: ");
  scanf("%f", &CPraio);
  area = pi * (CPraio * CPraio);
  printf("\nA area do circulo e: %2.1f\n", area);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movss  0xed0(%rip),%xmm0
movss  %xmm0,-0xc(%rbp)
lea    0xec8(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xee5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf01(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
movss  -0x8(%rbp),%xmm1
mulss  -0x8(%rbp),%xmm1
movss  0xe8d(%rip),%xmm0
mulss  %xmm1,%xmm0
movss  %xmm0,-0x4(%rbp)
movss  -0x4(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xed0(%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    0xf16(%rip),%rdi
call   1030 <puts@plt>
lea    0xec0(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xedc(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
movss  0x4(%rsp),%xmm0
mulss  %xmm0,%xmm0
mulss  0xe92(%rip),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xeb8(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [43 x i8] c" \0A [-- Calculando area de um circulo --] \0A\00"
@.str.1 = [42 x i8] c"\0APor favor digite o comprimento do raio: \00"
@.str.2 = [3 x i8] c"%f\00"
@.str.3 = [29 x i8] c"\0AA area do circulo e: %2.1f\0A\00"
define i32 @main() {
%1 = alloca float
%2 = alloca float
%3 = alloca float
store float 0x40091EB860000000, float* %3
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([43 x i8], [43 x i8]* @.str, i64 0, i64 0))
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([42 x i8], [42 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), float* %2)
%7 = load float, float* %2
%8 = load float, float* %2
%9 = fmul float %7, %8
%10 = fmul float 0x40091EB860000000, %9
store float %10, float* %1
%11 = load float, float* %1
%12 = fpext float %11 to double
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.3, i64 0, i64 0), double %12)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [42 x i8] c"\0APor favor digite o comprimento do raio: \00"
@.str.2 = [3 x i8] c"%f\00"
@.str.3 = [29 x i8] c"\0AA area do circulo e: %2.1f\0A\00"
@str = [42 x i8] c" \0A [-- Calculando area de um circulo --] \00"
define i32 @main() {
%1 = alloca float
%2 = bitcast float* %1 to i8*
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([42 x i8], [42 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([42 x i8], [42 x i8]* @.str.1, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), float* %1)
%6 = load float, float* %1
%7 = fmul float %6, %6
%8 = fmul float %7, 0x40091EB860000000
%9 = fpext float %8 to double
%10 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([29 x i8], [29 x i8]* @.str.3, i64 0, i64 0), double %9)
ret i32 0
}