#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 main(void) {
  char str1[80] = {}, str2[80] = {};
  bool isOneEditAway(char *str1, char *str2);
  printf("Please enter first string:");
  scanf("%s79", str1);
  printf("Please enter second string:");
  scanf("%s79", str2);
  printf("The strings are one edit away: %s\n",
         isOneEditAway(str1, str2) ? "true" : "false");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0xb0,%rsp
movl   $0x0,-0x4(%rbp)
lea    -0x60(%rbp),%rdi
xor    %esi,%esi
mov    $0x50,%edx
call   1040 <memset@plt>
lea    -0xb0(%rbp),%rdi
xor    %esi,%esi
mov    $0x50,%edx
call   1040 <memset@plt>
lea    0xe84(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    -0x60(%rbp),%rsi
lea    0xe8d(%rip),%rdi
call   1060 <scanf@plt>
lea    0xe86(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    -0xb0(%rbp),%rsi
lea    0xe6c(%rip),%rdi
call   1060 <scanf@plt>
lea    -0x60(%rbp),%rdi
lea    -0xb0(%rbp),%rsi
call   1050 <isOneEditAway@plt>
mov    %eax,%ecx
lea    0xe97(%rip),%rsi
lea    0xe8b(%rip),%rax
cmp    $0x0,%ecx
cmovne %rax,%rsi
lea    0xe5a(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0xb0,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
sub    $0xa0,%rsp
xorps  %xmm0,%xmm0
movaps %xmm0,0x90(%rsp)
movaps %xmm0,0x80(%rsp)
movaps %xmm0,0x70(%rsp)
movaps %xmm0,0x60(%rsp)
movaps %xmm0,0x50(%rsp)
movaps %xmm0,0x40(%rsp)
movaps %xmm0,0x30(%rsp)
movaps %xmm0,0x20(%rsp)
movaps %xmm0,0x10(%rsp)
movaps %xmm0,(%rsp)
lea    0xe83(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xe90(%rip),%r15
lea    0x50(%rsp),%r14
mov    %r15,%rdi
mov    %r14,%rsi
call   1050 <scanf@plt>
lea    0xe7e(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
mov    %rsp,%rbx
mov    %r15,%rdi
mov    %rbx,%rsi
call   1050 <scanf@plt>
mov    %r14,%rdi
mov    %rbx,%rsi
call   1040 <isOneEditAway@plt>
test   %eax,%eax
lea    0xe99(%rip),%rax
lea    0xe8d(%rip),%rsi
cmove  %rax,%rsi
lea    0xe5f(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
add    $0xa0,%rsp
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [27 x i8] c"Please enter first string:\00"
@.str.1 = [5 x i8] c"%s79\00"
@.str.2 = [28 x i8] c"Please enter second string:\00"
@.str.3 = [35 x i8] c"The strings are one edit away: %s\0A\00"
@.str.4 = [5 x i8] c"true\00"
@.str.5 = [6 x i8] c"false\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [80 x i8]
%3 = alloca [80 x i8]
store i32 0, i32* %1
%4 = bitcast [80 x i8]* %2 to i8*
%5 = bitcast [80 x i8]* %3 to i8*
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0))
%7 = getelementptr inbounds [80 x i8], [80 x i8]* %2, i64 0, i64 0
%8 = call i32 @scanf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i8* %7)
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.2, i64 0, i64 0))
%10 = getelementptr inbounds [80 x i8], [80 x i8]* %3, i64 0, i64 0
%11 = call i32 @scanf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i8* %10)
%12 = getelementptr inbounds [80 x i8], [80 x i8]* %2, i64 0, i64 0
%13 = getelementptr inbounds [80 x i8], [80 x i8]* %3, i64 0, i64 0
%14 = call i32 @isOneEditAway(i8* %12, i8* %13)
%15 = icmp ne i32 %14, 0
%16 = zext i1 %15 to i64
%17 = select i1 %15, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.4, i64 0, i64 0), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.5, i64 0, i64 0)
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.3, i64 0, i64 0), i8* %17)
ret i32 0
}

LLVM IR (-O2):
@.str = [27 x i8] c"Please enter first string:\00"
@.str.1 = [5 x i8] c"%s79\00"
@.str.2 = [28 x i8] c"Please enter second string:\00"
@.str.3 = [35 x i8] c"The strings are one edit away: %s\0A\00"
@.str.4 = [5 x i8] c"true\00"
@.str.5 = [6 x i8] c"false\00"
define i32 @main() {
%1 = alloca [80 x i8]
%2 = alloca [80 x i8]
%3 = getelementptr inbounds [80 x i8], [80 x i8]* %1, i64 0, i64 0
%4 = getelementptr inbounds [80 x i8], [80 x i8]* %2, i64 0, i64 0
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i8* %3)
%7 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([28 x i8], [28 x i8]* @.str.2, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i8* %4)
%9 = call i32 @isOneEditAway(i8* %3, i8* %4)
%10 = icmp eq i32 %9, 0
%11 = select i1 %10, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.5, i64 0, i64 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.4, i64 0, i64 0)
%12 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([35 x i8], [35 x i8]* @.str.3, i64 0, i64 0), i8* %11)
ret i32 0
}