#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 EXIT_SUCCESS;
int /*<<< orphan*/ average(int *, int);
int /*<<< orphan*/ printf(char *, int /*<<< orphan*/);
int /*<<< orphan*/ scanf(char *, int *);
int main(int argc, char *argv[]) {
  int n;
  scanf("%d", &n);
  int arr[n];
  int i = 0;
  while (i < n) {
    scanf("%d", &arr[i]);
    i++;
  }
  printf("average of array: %lf\n", average(arr, n));
  return EXIT_SUCCESS;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x40,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
lea    0xeb3(%rip),%rdi
lea    -0x14(%rbp),%rsi
call   1050 <scanf@plt>
mov    -0x14(%rbp),%eax
mov    %rsp,%rcx
mov    %rcx,-0x20(%rbp)
lea    0xf(,%rax,4),%rdx
and    $0xfffffffffffffff0,%rdx
mov    %rsp,%rcx
sub    %rdx,%rcx
mov    %rcx,-0x38(%rbp)
mov    %rcx,%rsp
mov    %rax,-0x28(%rbp)
movl   $0x0,-0x2c(%rbp)
mov    -0x2c(%rbp),%eax
cmp    -0x14(%rbp),%eax
jge    11b9 <main+0x89>
mov    -0x38(%rbp),%rsi
movslq -0x2c(%rbp),%rax
shl    $0x2,%rax
add    %rax,%rsi
lea    0xe5a(%rip),%rdi
call   1050 <scanf@plt>
mov    -0x2c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x2c(%rbp)
jmp    1184 <main+0x54>
mov    -0x38(%rbp),%rdi
mov    -0x14(%rbp),%esi
call   1040 <average@plt>
mov    %eax,%esi
lea    0xe35(%rip),%rdi
call   1030 <printf@plt>
mov    0x2e06(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x4(%rbp)
mov    -0x20(%rbp),%rax
mov    %rax,%rsp
mov    -0x4(%rbp),%eax
mov    %rbp,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
mov    %rsp,%rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
push   %rax
lea    0xebb(%rip),%rdi
lea    -0x2c(%rbp),%rsi
call   1050 <scanf@plt>
mov    %rsp,%r12
mov    -0x2c(%rbp),%eax
mov    %rsp,%r14
lea    0xf(,%rax,4),%rax
and    $0xfffffffffffffff0,%rax
sub    %rax,%r14
mov    %r14,%rsp
mov    -0x2c(%rbp),%esi
test   %esi,%esi
jle    119c <main+0x6c>
xor    %r13d,%r13d
lea    0xe86(%rip),%r15
mov    %r14,%rbx
nopl   (%rax)
mov    %r15,%rdi
mov    %rbx,%rsi
call   1050 <scanf@plt>
add    $0x1,%r13
movslq -0x2c(%rbp),%rsi
add    $0x4,%rbx
cmp    %rsi,%r13
jl     1180 <main+0x50>
mov    %r14,%rdi
call   1040 <average@plt>
lea    0xe58(%rip),%rdi
mov    %eax,%esi
call   1030 <printf@plt>
mov    0x2e27(%rip),%rax
mov    (%rax),%eax
mov    %r12,%rsp
lea    -0x28(%rbp),%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%d\00"
@.str.1 = [23 x i8] c"average of array: %lf\0A\00"
@EXIT_SUCCESS = global i32 0
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca i8*
%8 = alloca i64
%9 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%10 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %6)
%11 = load i32, i32* %6
%12 = zext i32 %11 to i64
%13 = call i8* @llvm.stacksave()
store i8* %13, i8** %7
%14 = alloca i32, i64 %12
store i64 %12, i64* %8
store i32 0, i32* %9
br label %15
15: ; preds = %19, %2
%16 = load i32, i32* %9
%17 = load i32, i32* %6
%18 = icmp slt i32 %16, %17
br i1 %18, label %19, label %26
19: ; preds = %15
%20 = load i32, i32* %9
%21 = sext i32 %20 to i64
%22 = getelementptr inbounds i32, i32* %14, i64 %21
%23 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %22)
%24 = load i32, i32* %9
%25 = add nsw i32 %24, 1
store i32 %25, i32* %9
br label %15
26: ; preds = %15
%27 = load i32, i32* %6
%28 = call i32 @average(i32* %14, i32 %27)
%29 = call i32 @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0), i32 %28)
%30 = load i32, i32* @EXIT_SUCCESS
store i32 %30, i32* %3
%31 = load i8*, i8** %7
%32 = load i32, i32* %3
ret i32 %32
}

LLVM IR (-O2):
@.str = [3 x i8] c"%d\00"
@.str.1 = [23 x i8] c"average of array: %lf\0A\00"
@EXIT_SUCCESS = global i32 0
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = alloca i32
%4 = bitcast i32* %3 to i8*
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %3)
%6 = load i32, i32* %3
%7 = zext i32 %6 to i64
%8 = call i8* @llvm.stacksave()
%9 = alloca i32, i64 %7
%10 = load i32, i32* %3
%11 = icmp sgt i32 %10, 0
br i1 %11, label %12, label %20
12: ; preds = %2, %12
%13 = phi i64 [ %16, %12 ], [ 0, %2 ]
%14 = getelementptr inbounds i32, i32* %9, i64 %13
%15 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %14)
%16 = add nuw nsw i64 %13, 1
%17 = load i32, i32* %3
%18 = sext i32 %17 to i64
%19 = icmp slt i64 %16, %18
br i1 %19, label %12, label %20
20: ; preds = %12, %2
%21 = phi i32 [ %10, %2 ], [ %17, %12 ]
%22 = call i32 @average(i32* %9, i32 %21)
%23 = call i32 @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0), i32 %22)
%24 = load i32, i32* @EXIT_SUCCESS
ret i32 %24
}