#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 *);
void main() {
  float media, n1, n2, n3;
  printf("\nDigite a primeira nota: ");
  scanf("%f", &n1);
  printf("Digite a segunda nota: ");
  scanf(" %f", &n2);
  printf("Digite a terceira nota: ");
  scanf(" %f", &n3);
  media = (n1 + 2 * n2 + 2 * n3) / 5;
  printf("\nMedia: %.2f\n", media);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xed5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xefa(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xed1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xedb(%rip),%rdi
lea    -0xc(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xecf(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xebd(%rip),%rdi
lea    -0x10(%rbp),%rsi
call   1040 <scanf@plt>
movss  -0x8(%rbp),%xmm0
movss  -0xc(%rbp),%xmm1
addss  %xmm1,%xmm1
addss  %xmm0,%xmm1
movss  -0x10(%rbp),%xmm0
addss  %xmm0,%xmm0
addss  %xmm1,%xmm0
movss  0xe57(%rip),%xmm1
divss  %xmm1,%xmm0
movss  %xmm0,-0x4(%rbp)
movss  -0x4(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xe91(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xed8(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xefd(%rip),%rdi
lea    0xc(%rsp),%rsi
call   1040 <scanf@plt>
lea    0xed3(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xedd(%rip),%rbx
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1040 <scanf@plt>
lea    0xecd(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0x4(%rsp),%rsi
mov    %rbx,%rdi
call   1040 <scanf@plt>
movss  0x8(%rsp),%xmm0
addss  %xmm0,%xmm0
addss  0xc(%rsp),%xmm0
movss  0x4(%rsp),%xmm1
addss  %xmm1,%xmm1
addss  %xmm0,%xmm1
divss  0xe59(%rip),%xmm1
xorps  %xmm0,%xmm0
cvtss2sd %xmm1,%xmm0
lea    0xe9e(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [26 x i8] c"\0ADigite a primeira nota: \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [24 x i8] c"Digite a segunda nota: \00"
@.str.3 = [4 x i8] c" %f\00"
@.str.4 = [25 x i8] c"Digite a terceira nota: \00"
@.str.5 = [14 x i8] c"\0AMedia: %.2f\0A\00"
define void @main() {
%1 = alloca float
%2 = alloca float
%3 = alloca float
%4 = alloca float
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([26 x i8], [26 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 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.2, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), float* %3)
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.4, i64 0, i64 0))
%10 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), float* %4)
%11 = load float, float* %2
%12 = load float, float* %3
%13 = call float @llvm.fmuladd.f32(float 2.000000e+00, float %12, float %11)
%14 = load float, float* %4
%15 = call float @llvm.fmuladd.f32(float 2.000000e+00, float %14, float %13)
%16 = fdiv float %15, 5.000000e+00
store float %16, float* %1
%17 = load float, float* %1
%18 = fpext float %17 to double
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.5, i64 0, i64 0), double %18)
ret void
}

LLVM IR (-O2):
@.str = [26 x i8] c"\0ADigite a primeira nota: \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [24 x i8] c"Digite a segunda nota: \00"
@.str.3 = [4 x i8] c" %f\00"
@.str.4 = [25 x i8] c"Digite a terceira nota: \00"
@.str.5 = [14 x i8] c"\0AMedia: %.2f\0A\00"
define void @main() {
%1 = alloca float
%2 = alloca float
%3 = alloca float
%4 = bitcast float* %1 to i8*
%5 = bitcast float* %2 to i8*
%6 = bitcast float* %3 to i8*
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %1)
%9 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @.str.2, i64 0, i64 0))
%10 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), float* %2)
%11 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @.str.4, i64 0, i64 0))
%12 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), float* %3)
%13 = load float, float* %1
%14 = load float, float* %2
%15 = call float @llvm.fmuladd.f32(float %14, float 2.000000e+00, float %13)
%16 = load float, float* %3
%17 = call float @llvm.fmuladd.f32(float %16, float 2.000000e+00, float %15)
%18 = fdiv float %17, 5.000000e+00
%19 = fpext float %18 to double
%20 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.5, i64 0, i64 0), double %19)
ret void
}