#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 nota[3];
  printf("Digite sua primeira nota: ");
  scanf("%f", &nota[0]);
  printf("Digite sua primeira nota: ");
  scanf("%f", &nota[1]);
  nota[3] = (nota[0] + nota[1]) / 2;
  printf("%.1f", nota[3]);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xece(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    -0x10(%rbp),%rsi
lea    0xed7(%rip),%rdi
call   1040 <scanf@plt>
lea    0xeb0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    -0x10(%rbp),%rsi
add    $0x4,%rsi
lea    0xeb5(%rip),%rdi
call   1040 <scanf@plt>
movss  -0x10(%rbp),%xmm0
addss  -0xc(%rbp),%xmm0
movss  0xe7f(%rip),%xmm1
divss  %xmm1,%xmm0
movss  %xmm0,-0x4(%rbp)
movss  -0x4(%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   %r14
push   %rbx
sub    $0x18,%rsp
lea    0xed6(%rip),%r14
mov    %r14,%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xee0(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1040 <scanf@plt>
mov    %r14,%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0x10(%rsp),%rsi
mov    %rbx,%rdi
call   1040 <scanf@plt>
movss  0xc(%rsp),%xmm0
addss  0x10(%rsp),%xmm0
mulss  0xe89(%rip),%xmm0
movss  %xmm0,0x18(%rsp)
cvtss2sd %xmm0,%xmm0
lea    0xe9a(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x18,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [27 x i8] c"Digite sua primeira nota: \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [5 x i8] c"%.1f\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [3 x float]
store i32 0, i32* %1
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0))
%4 = getelementptr inbounds [3 x float], [3 x float]* %2, i64 0, i64 0
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %4)
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0))
%7 = getelementptr inbounds [3 x float], [3 x float]* %2, i64 0, i64 1
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %7)
%9 = getelementptr inbounds [3 x float], [3 x float]* %2, i64 0, i64 0
%10 = load float, float* %9
%11 = getelementptr inbounds [3 x float], [3 x float]* %2, i64 0, i64 1
%12 = load float, float* %11
%13 = fadd float %10, %12
%14 = fdiv float %13, 2.000000e+00
%15 = getelementptr inbounds [3 x float], [3 x float]* %2, i64 0, i64 3
store float %14, float* %15
%16 = getelementptr inbounds [3 x float], [3 x float]* %2, i64 0, i64 3
%17 = load float, float* %16
%18 = fpext float %17 to double
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0), double %18)
ret i32 0
}

LLVM IR (-O2):
@.str = [27 x i8] c"Digite sua primeira nota: \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [5 x i8] c"%.1f\00"
define i32 @main() {
%1 = alloca [3 x float]
%2 = bitcast [3 x float]* %1 to i8*
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0))
%4 = getelementptr inbounds [3 x float], [3 x float]* %1, i64 0, i64 0
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %4)
%6 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0))
%7 = getelementptr inbounds [3 x float], [3 x float]* %1, i64 0, i64 1
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %7)
%9 = load float, float* %4
%10 = load float, float* %7
%11 = fadd float %9, %10
%12 = fmul float %11, 5.000000e-01
%13 = getelementptr inbounds [3 x float], [3 x float]* %1, i64 0, i64 3
store float %12, float* %13
%14 = fpext float %12 to double
%15 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0), double %14)
ret i32 0
}