#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*/ fflush(int /*<<< orphan*/);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ puts(char *);
int /*<<< orphan*/ scanf(char *, ...);
int /*<<< orphan*/ stdin;
int main(int argc, char *argv[]) {
  int age;
  char name[20];
  puts("Enter your age:");
  scanf("%d", &age);
  fflush(stdin);
  puts("Enter your first name.");
  scanf("%s", name);
  printf("Your age is %d. \n", age);
  printf("Your name is %s. \n", name);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
lea    0xea3(%rip),%rdi
call   1030 <puts@plt>
lea    0xea7(%rip),%rdi
lea    -0x14(%rbp),%rsi
mov    $0x0,%al
call   1060 <scanf@plt>
mov    0x2e6d(%rip),%rax
mov    (%rax),%edi
call   1050 <fflush@plt>
lea    0xe8a(%rip),%rdi
call   1030 <puts@plt>
lea    -0x30(%rbp),%rsi
lea    0xe91(%rip),%rdi
mov    $0x0,%al
call   1060 <scanf@plt>
mov    -0x14(%rbp),%esi
lea    0xe83(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    -0x30(%rbp),%rsi
lea    0xe83(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x30,%rsp
lea    0xeb4(%rip),%rdi
call   1030 <puts@plt>
lea    0xeb8(%rip),%rdi
lea    0xc(%rsp),%rsi
xor    %eax,%eax
call   1060 <scanf@plt>
mov    0x2e7d(%rip),%rax
mov    (%rax),%edi
call   1050 <fflush@plt>
lea    0xe9a(%rip),%rdi
call   1030 <puts@plt>
lea    0xea5(%rip),%rdi
lea    0x10(%rsp),%rbx
mov    %rbx,%rsi
xor    %eax,%eax
call   1060 <scanf@plt>
mov    0xc(%rsp),%esi
lea    0xe8e(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xe92(%rip),%rdi
mov    %rbx,%rsi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [16 x i8] c"Enter your age:\00"
@.str.1 = [3 x i8] c"%d\00"
@stdin = global i32 0
@.str.2 = [23 x i8] c"Enter your first name.\00"
@.str.3 = [3 x i8] c"%s\00"
@.str.4 = [18 x i8] c"Your age is %d. \0A\00"
@.str.5 = [19 x i8] c"Your name is %s. \0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca [20 x i8]
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%8 = call i32 @puts(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str, i64 0, i64 0))
%9 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %6)
%10 = load i32, i32* @stdin
%11 = call i32 @fflush(i32 %10)
%12 = call i32 @puts(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0))
%13 = getelementptr inbounds [20 x i8], [20 x i8]* %7, i64 0, i64 0
%14 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0), i8* %13)
%15 = load i32, i32* %6
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.4, i64 0, i64 0), i32 %15)
%17 = getelementptr inbounds [20 x i8], [20 x i8]* %7, i64 0, i64 0
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.5, i64 0, i64 0), i8* %17)
ret i32 0
}

LLVM IR (-O2):
@.str = [16 x i8] c"Enter your age:\00"
@.str.1 = [3 x i8] c"%d\00"
@stdin = global i32 0
@.str.2 = [23 x i8] c"Enter your first name.\00"
@.str.3 = [3 x i8] c"%s\00"
@.str.4 = [18 x i8] c"Your age is %d. \0A\00"
@.str.5 = [19 x i8] c"Your name is %s. \0A\00"
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = alloca i32
%4 = alloca [20 x i8]
%5 = bitcast i32* %3 to i8*
%6 = getelementptr inbounds [20 x i8], [20 x i8]* %4, i64 0, i64 0
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str, i64 0, i64 0))
%8 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %3)
%9 = load i32, i32* @stdin
%10 = call i32 @fflush(i32 %9)
%11 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0))
%12 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0), i8* %6)
%13 = load i32, i32* %3
%14 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([18 x i8], [18 x i8]* @.str.4, i64 0, i64 0), i32 %13)
%15 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([19 x i8], [19 x i8]* @.str.5, i64 0, i64 0), i8* %6)
ret i32 0
}