#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*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, char *);
int /*<<< orphan*/ strcpy(char *, char *);
int main() {
  char number[40], faculty_number[40];
  printf("Please enter your telephone number: ");
  scanf("%s", number);
  strcpy(faculty_number, number);
  printf("The telephone number of the faculty is now: %s\n", faculty_number);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x60,%rsp
lea    0xec1(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    -0x30(%rbp),%rsi
lea    0xed4(%rip),%rdi
call   1050 <scanf@plt>
lea    -0x60(%rbp),%rdi
lea    -0x30(%rbp),%rsi
call   1030 <strcpy@plt>
lea    -0x60(%rbp),%rsi
lea    0xeba(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x60,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
sub    $0x58,%rsp
lea    0xec2(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xed9(%rip),%rdi
lea    0x30(%rsp),%rbx
mov    %rbx,%rsi
call   1050 <scanf@plt>
mov    %rsp,%r14
mov    %r14,%rdi
mov    %rbx,%rsi
call   1030 <strcpy@plt>
lea    0xeba(%rip),%rdi
mov    %r14,%rsi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x58,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [37 x i8] c"Please enter your telephone number: \00"
@.str.1 = [3 x i8] c"%s\00"
@.str.2 = [48 x i8] c"The telephone number of the faculty is now: %s\0A\00"
define i32 @main() {
%1 = alloca [40 x i8]
%2 = alloca [40 x i8]
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str, i64 0, i64 0))
%4 = getelementptr inbounds [40 x i8], [40 x i8]* %1, i64 0, i64 0
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8* %4)
%6 = getelementptr inbounds [40 x i8], [40 x i8]* %2, i64 0, i64 0
%7 = getelementptr inbounds [40 x i8], [40 x i8]* %1, i64 0, i64 0
%8 = call i32 @strcpy(i8* %6, i8* %7)
%9 = getelementptr inbounds [40 x i8], [40 x i8]* %2, i64 0, i64 0
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([48 x i8], [48 x i8]* @.str.2, i64 0, i64 0), i8* %9)
ret i32 0
}

LLVM IR (-O2):
@.str = [37 x i8] c"Please enter your telephone number: \00"
@.str.1 = [3 x i8] c"%s\00"
@.str.2 = [48 x i8] c"The telephone number of the faculty is now: %s\0A\00"
define i32 @main() {
%1 = alloca [40 x i8]
%2 = alloca [40 x i8]
%3 = getelementptr inbounds [40 x i8], [40 x i8]* %1, i64 0, i64 0
%4 = getelementptr inbounds [40 x i8], [40 x i8]* %2, i64 0, i64 0
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([37 x i8], [37 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), i8* %3)
%7 = call i32 @strcpy(i8* %4, i8* %3)
%8 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([48 x i8], [48 x i8]* @.str.2, i64 0, i64 0), i8* %4)
ret i32 0
}