#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 average(int, int, int);
int /*<<< orphan*/ flushall();
int /*<<< orphan*/ getchar();
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *);
main() {
  int a, b, c;
  int result;
  printf("Input number a:\n");
  scanf("%d", &a);
  printf("Input number b:\n");
  scanf("%d", &b);
  printf("Input number c:\n");
  scanf("%d", &c);
  result = average(a, b, c);
  printf("\nThe average is %d.\n", result);
  flushall();
  getchar();
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xea1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xea4(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1070 <scanf@plt>
lea    0xe97(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xe86(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1070 <scanf@plt>
lea    0xe8a(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xe68(%rip),%rdi
lea    -0xc(%rbp),%rsi
call   1070 <scanf@plt>
mov    -0x4(%rbp),%edi
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
call   1060 <average@plt>
mov    %eax,-0x10(%rbp)
mov    -0x10(%rbp),%esi
lea    0xe69(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    $0x0,%al
call   1040 <flushall@plt>
mov    $0x0,%al
call   1050 <getchar@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xeac(%rip),%rdi
call   1030 <puts@plt>
lea    0xe88(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1080 <scanf@plt>
lea    0xe9c(%rip),%rdi
call   1030 <puts@plt>
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1080 <scanf@plt>
lea    0xe93(%rip),%rdi
call   1030 <puts@plt>
lea    0x4(%rsp),%rsi
mov    %rbx,%rdi
call   1080 <scanf@plt>
mov    0xc(%rsp),%edi
mov    0x8(%rsp),%esi
mov    0x4(%rsp),%edx
call   1070 <average@plt>
lea    0xe34(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
call   1050 <flushall@plt>
xor    %eax,%eax
call   1060 <getchar@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [17 x i8] c"Input number a:\0A\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [17 x i8] c"Input number b:\0A\00"
@.str.3 = [17 x i8] c"Input number c:\0A\00"
@.str.4 = [21 x i8] c"\0AThe average is %d.\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([17 x i8], [17 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), i32* %1)
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.2, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.3, i64 0, i64 0))
%10 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %3)
%11 = load i32, i32* %1
%12 = load i32, i32* %2
%13 = load i32, i32* %3
%14 = call i32 @average(i32 %11, i32 %12, i32 %13)
store i32 %14, i32* %4
%15 = load i32, i32* %4
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.4, i64 0, i64 0), i32 %15)
%17 = call i32 (...) @flushall()
%18 = call i32 (...) @getchar()
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%d\00"
@.str.4 = [21 x i8] c"\0AThe average is %d.\0A\00"
@str = [16 x i8] c"Input number a:\00"
@str.5 = [16 x i8] c"Input number b:\00"
@str.6 = [16 x i8] c"Input number c:\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = bitcast i32* %1 to i8*
%5 = bitcast i32* %2 to i8*
%6 = bitcast i32* %3 to i8*
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 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), i32* %1)
%9 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @str.5, i64 0, i64 0))
%10 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%11 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @str.6, i64 0, i64 0))
%12 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %3)
%13 = load i32, i32* %1
%14 = load i32, i32* %2
%15 = load i32, i32* %3
%16 = call i32 @average(i32 %13, i32 %14, i32 %15)
%17 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([21 x i8], [21 x i8]* @.str.4, i64 0, i64 0), i32 %16)
%18 = call i32 (...) @flushall()
%19 = call i32 (...) @getchar()
ret i32 0
}