#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 *, int *);
int /*<<< orphan*/ system(char *);
int main() {
  int num, cont, acm;
  cont = acm = 0;
  float res;
  while (num != -1) {
    printf("\nDigite um inteiro positivo: ");
    scanf("%d", &num);
    acm = acm + num;
    cont++;
  }
  res = (acm / cont);
  printf("\nA média dos números digitados é de: %.2f.\n\n", res);
  system("pause");
  return (0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x10(%rbp)
movl   $0x0,-0xc(%rbp)
cmpl   $0xffffffff,-0x8(%rbp)
je     118c <main+0x5c>
lea    0xea2(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xeb2(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1050 <scanf@plt>
mov    -0x10(%rbp),%eax
add    -0x8(%rbp),%eax
mov    %eax,-0x10(%rbp)
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    114d <main+0x1d>
mov    -0x10(%rbp),%eax
cltd
idivl  -0xc(%rbp)
cvtsi2ss %eax,%xmm0
movss  %xmm0,-0x14(%rbp)
movss  -0x14(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xe75(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
lea    0xe97(%rip),%rdi
call   1030 <system@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %r12
push   %rbx
sub    $0x10,%rsp
lea    0xebd(%rip),%r14
lea    0xed4(%rip),%r15
lea    0xc(%rsp),%r12
xor    %ebx,%ebx
xor    %ebp,%ebp
cs nopw 0x0(%rax,%rax,1)
nopl   (%rax)
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %r15,%rdi
mov    %r12,%rsi
call   1050 <scanf@plt>
mov    0xc(%rsp),%eax
add    %eax,%ebp
add    $0x1,%ebx
cmp    $0xffffffff,%eax
jne    1160 <main+0x30>
mov    %ebp,%eax
cltd
idiv   %ebx
cvtsi2ss %eax,%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xe8a(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
lea    0xeac(%rip),%rdi
call   1030 <system@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [30 x i8] c"\0ADigite um inteiro positivo: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [48 x i8] c"\0AA m\C3\A9dia dos n\C3\BAmeros digitados \C3\A9 de: %.2f.\0A\0A\00"
@.str.3 = [6 x i8] c"pause\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca float
store i32 0, i32* %1
store i32 0, i32* %4
store i32 0, i32* %3
br label %6
6: ; preds = %9, %0
%7 = load i32, i32* %2
%8 = icmp ne i32 %7, -1
br i1 %8, label %9, label %17
9: ; preds = %6
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str, i64 0, i64 0))
%11 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%12 = load i32, i32* %4
%13 = load i32, i32* %2
%14 = add nsw i32 %12, %13
store i32 %14, i32* %4
%15 = load i32, i32* %3
%16 = add nsw i32 %15, 1
store i32 %16, i32* %3
br label %6
17: ; preds = %6
%18 = load i32, i32* %4
%19 = load i32, i32* %3
%20 = sdiv i32 %18, %19
%21 = sitofp i32 %20 to float
store float %21, float* %5
%22 = load float, float* %5
%23 = fpext float %22 to double
%24 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([48 x i8], [48 x i8]* @.str.2, i64 0, i64 0), double %23)
%25 = call i32 @system(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@.str = [30 x i8] c"\0ADigite um inteiro positivo: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [48 x i8] c"\0AA m\C3\A9dia dos n\C3\BAmeros digitados \C3\A9 de: %.2f.\0A\0A\00"
@.str.3 = [6 x i8] c"pause\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
br label %3
3: ; preds = %0, %3
%4 = phi i32 [ %10, %3 ], [ 0, %0 ]
%5 = phi i32 [ %9, %3 ], [ 0, %0 ]
%6 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([30 x i8], [30 x i8]* @.str, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%8 = load i32, i32* %1
%9 = add nsw i32 %8, %5
%10 = add nuw nsw i32 %4, 1
%11 = icmp eq i32 %8, -1
br i1 %11, label %12, label %3
12: ; preds = %3
%13 = sdiv i32 %9, %10
%14 = sitofp i32 %13 to float
%15 = fpext float %14 to double
%16 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([48 x i8], [48 x i8]* @.str.2, i64 0, i64 0), double %15)
%17 = call i32 @system(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0))
ret i32 0
}