#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 getchar();
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ putchar(int);
int /*<<< orphan*/ scanf(char *, int *);
int main() {
  printf("\n");
  int x = 0;
  printf("Input: ");
  scanf("%d", &x);
  printf("Input was: %d\n", x);
  getchar();
  printf("GetChar: ");
  int x2;
  x2 = getchar();
  printf("Got char: ");
  putchar(x2);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xec2(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
movl   $0x0,-0x8(%rbp)
lea    0xe95(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xe8f(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1060 <scanf@plt>
mov    -0x8(%rbp),%esi
lea    0xe7f(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    $0x0,%al
call   1050 <getchar@plt>
lea    0xe79(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    $0x0,%al
call   1050 <getchar@plt>
mov    %eax,-0xc(%rbp)
lea    0xe6b(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0xc(%rbp),%edi
call   1030 <putchar@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
mov    $0xa,%edi
call   1030 <putchar@plt>
movl   $0x0,0xc(%rsp)
lea    0xea2(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xe9c(%rip),%rdi
lea    0xc(%rsp),%rsi
call   1060 <scanf@plt>
mov    0xc(%rsp),%esi
lea    0xe8a(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
call   1050 <getchar@plt>
lea    0xe84(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
call   1050 <getchar@plt>
mov    %eax,%ebx
lea    0xe77(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %ebx,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [2 x i8] c"\0A\00"
@.str.1 = [8 x i8] c"Input: \00"
@.str.2 = [3 x i8] c"%d\00"
@.str.3 = [15 x i8] c"Input was: %d\0A\00"
@.str.4 = [10 x i8] c"GetChar: \00"
@.str.5 = [11 x i8] c"Got char: \00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %2
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %2)
%7 = load i32, i32* %2
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.3, i64 0, i64 0), i32 %7)
%9 = call i32 (...) @getchar()
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.4, i64 0, i64 0))
%11 = call i32 (...) @getchar()
store i32 %11, i32* %3
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.5, i64 0, i64 0))
%13 = load i32, i32* %3
%14 = call i32 @putchar(i32 %13)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [8 x i8] c"Input: \00"
@.str.2 = [3 x i8] c"%d\00"
@.str.3 = [15 x i8] c"Input was: %d\0A\00"
@.str.4 = [10 x i8] c"GetChar: \00"
@.str.5 = [11 x i8] c"Got char: \00"
define i32 @main() {
%1 = alloca i32
%2 = tail call i32 @putchar(i32 10)
%3 = bitcast i32* %1 to i8*
store i32 0, i32* %1
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %1)
%6 = load i32, i32* %1
%7 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @.str.3, i64 0, i64 0), i32 %6)
%8 = call i32 (...) @getchar()
%9 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([10 x i8], [10 x i8]* @.str.4, i64 0, i64 0))
%10 = call i32 (...) @getchar()
%11 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @.str.5, i64 0, i64 0))
%12 = call i32 @putchar(i32 %10)
ret i32 0
}