#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*/ gets(char *);
int /*<<< orphan*/ printf(char *, ...);
int main(void) {
  char a[11 + 1], b[11 + 1];
  printf("Introduce una cadena: ");
  gets(a);
  printf("Introduce otra cadena: ");
  gets(b);
  printf("La primera es %s y la segunda es %s\n", a, b);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    -0x10(%rbp),%rdi
call   1040 <gets@plt>
lea    0xeca(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    -0x1c(%rbp),%rdi
call   1040 <gets@plt>
lea    -0x10(%rbp),%rsi
lea    -0x1c(%rbp),%rdx
lea    0xec3(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
sub    $0x18,%rsp
lea    0xed2(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xc(%rsp),%r14
mov    %r14,%rdi
call   1040 <gets@plt>
lea    0xece(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
mov    %rsp,%rbx
mov    %rbx,%rdi
call   1040 <gets@plt>
lea    0xecd(%rip),%rdi
mov    %r14,%rsi
mov    %rbx,%rdx
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x18,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [23 x i8] c"Introduce una cadena: \00"
@.str.1 = [24 x i8] c"Introduce otra cadena: \00"
@.str.2 = [37 x i8] c"La primera es %s y la segunda es %s\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [12 x i8]
%3 = alloca [12 x i8]
store i32 0, i32* %1
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0))
%5 = getelementptr inbounds [12 x i8], [12 x i8]* %2, i64 0, i64 0
%6 = call i32 @gets(i8* %5)
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0))
%8 = getelementptr inbounds [12 x i8], [12 x i8]* %3, i64 0, i64 0
%9 = call i32 @gets(i8* %8)
%10 = getelementptr inbounds [12 x i8], [12 x i8]* %2, i64 0, i64 0
%11 = getelementptr inbounds [12 x i8], [12 x i8]* %3, i64 0, i64 0
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str.2, i64 0, i64 0), i8* %10, i8* %11)
ret i32 0
}

LLVM IR (-O2):
@.str = [23 x i8] c"Introduce una cadena: \00"
@.str.1 = [24 x i8] c"Introduce otra cadena: \00"
@.str.2 = [37 x i8] c"La primera es %s y la segunda es %s\0A\00"
define i32 @main() {
%1 = alloca [12 x i8]
%2 = alloca [12 x i8]
%3 = getelementptr inbounds [12 x i8], [12 x i8]* %1, i64 0, i64 0
%4 = getelementptr inbounds [12 x i8], [12 x i8]* %2, i64 0, i64 0
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @gets(i8* %3)
%7 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0))
%8 = call i32 @gets(i8* %4)
%9 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([37 x i8], [37 x i8]* @.str.2, i64 0, i64 0), i8* %3, i8* %4)
ret i32 0
}