#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 *);
float sqrt(int);
int main() {
  float lado, altura;
  printf("Digite o lado do triangulo:");
  scanf("%f", &lado);
  altura = lado * sqrt(3) / 2.0;
  printf("A altura é %f\n", altura);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xec9(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xed7(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1040 <scanf@plt>
movss  -0x4(%rbp),%xmm0
movss  %xmm0,-0xc(%rbp)
mov    $0x3,%edi
call   1050 <sqrt@plt>
movaps %xmm0,%xmm1
movss  -0xc(%rbp),%xmm0
mulss  %xmm1,%xmm0
cvtss2sd %xmm0,%xmm0
movsd  0xe7e(%rip),%xmm1
divsd  %xmm1,%xmm0
cvtsd2ss %xmm0,%xmm0
movss  %xmm0,-0x8(%rbp)
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xe88(%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    0xecc(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xeda(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
movss  0x4(%rsp),%xmm0
movss  %xmm0,(%rsp)
mov    $0x3,%edi
call   1050 <sqrt@plt>
mulss  (%rsp),%xmm0
mulss  0xe8e(%rip),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xea6(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [28 x i8] c"Digite o lado do triangulo:\00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [16 x i8] c"A altura \C3\A9 %f\0A\00"
define i32 @main() {
%1 = alloca float
%2 = alloca float
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([28 x i8], [28 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 = call float @sqrt(i32 3)
%7 = fmul float %5, %6
%8 = fpext float %7 to double
%9 = fdiv double %8, 2.000000e+00
%10 = fptrunc double %9 to float
store float %10, float* %2
%11 = load float, float* %2
%12 = fpext float %11 to double
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.2, i64 0, i64 0), double %12)
ret i32 0
}

LLVM IR (-O2):
@.str = [28 x i8] c"Digite o lado do triangulo:\00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [16 x i8] c"A altura \C3\A9 %f\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 ([28 x i8], [28 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 = call float @sqrt(i32 3)
%7 = fmul float %5, %6
%8 = fmul float %7, 5.000000e-01
%9 = fpext float %8 to double
%10 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.2, i64 0, i64 0), double %9)
ret i32 0
}