#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 *, ...);
int str_ncmp(char *, char *, int);
int main() {
  int n;
  char str1[80];
  char str2[80];
  printf("Input a string 1: ");
  scanf("%s", str1);
  printf("Input a string 2: ");
  scanf("%s", str2);
  printf("Number of comparison?: ");
  scanf("%d", &n);
  if (str_ncmp(str1, str2, n) == 1) {
    printf(" Something different\n");
  } else {
    printf(" Same\n");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0xb0,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeb7(%rip),%rdi
call   1030 <printf@plt>
lea    -0x60(%rbp),%rsi
lea    0xeba(%rip),%rdi
mov    $0x0,%al
call   1050 <scanf@plt>
lea    0xeaf(%rip),%rdi
call   1030 <printf@plt>
lea    -0xb0(%rbp),%rsi
lea    0xe99(%rip),%rdi
mov    $0x0,%al
call   1050 <scanf@plt>
lea    0xea1(%rip),%rdi
call   1030 <printf@plt>
lea    0xead(%rip),%rdi
lea    -0x8(%rbp),%rsi
mov    $0x0,%al
call   1050 <scanf@plt>
lea    -0x60(%rbp),%rdi
lea    -0xb0(%rbp),%rsi
mov    -0x8(%rbp),%edx
call   1040 <str_ncmp@plt>
cmp    $0x1,%eax
jne    11cc <main+0x9c>
lea    0xe82(%rip),%rdi
call   1030 <printf@plt>
jmp    11d8 <main+0xa8>
lea    0xe87(%rip),%rdi
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    $0xb0,%rsp
lea    0xead(%rip),%rdi
call   1040 <printf@plt>
lea    0xeb4(%rip),%rbx
lea    0x60(%rsp),%r14
mov    %rbx,%rdi
mov    %r14,%rsi
xor    %eax,%eax
call   1060 <scanf@plt>
lea    0xe9e(%rip),%rdi
call   1040 <printf@plt>
lea    0x10(%rsp),%r15
mov    %rbx,%rdi
mov    %r15,%rsi
xor    %eax,%eax
call   1060 <scanf@plt>
lea    0xe93(%rip),%rdi
call   1040 <printf@plt>
lea    0xe9f(%rip),%rdi
lea    0xc(%rsp),%rsi
xor    %eax,%eax
call   1060 <scanf@plt>
mov    0xc(%rsp),%edx
mov    %r14,%rdi
mov    %r15,%rsi
call   1050 <str_ncmp@plt>
cmp    $0x1,%eax
lea    0xe83(%rip),%rax
lea    0xe76(%rip),%rdi
cmove  %rax,%rdi
call   1030 <puts@plt>
xor    %eax,%eax
add    $0xb0,%rsp
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [19 x i8] c"Input a string 1: \00"
@.str.1 = [3 x i8] c"%s\00"
@.str.2 = [19 x i8] c"Input a string 2: \00"
@.str.3 = [24 x i8] c"Number of comparison?: \00"
@.str.4 = [3 x i8] c"%d\00"
@.str.5 = [22 x i8] c" Something different\0A\00"
@.str.6 = [7 x i8] c" Same\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca [80 x i8]
%4 = alloca [80 x i8]
store i32 0, i32* %1
%5 = call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str, i64 0, i64 0))
%6 = getelementptr inbounds [80 x i8], [80 x i8]* %3, i64 0, i64 0
%7 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8* %6)
%8 = call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.2, i64 0, i64 0))
%9 = getelementptr inbounds [80 x i8], [80 x i8]* %4, i64 0, i64 0
%10 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8* %9)
%11 = call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0))
%12 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0), i32* %2)
%13 = getelementptr inbounds [80 x i8], [80 x i8]* %3, i64 0, i64 0
%14 = getelementptr inbounds [80 x i8], [80 x i8]* %4, i64 0, i64 0
%15 = load i32, i32* %2
%16 = call i32 @str_ncmp(i8* %13, i8* %14, i32 %15)
%17 = icmp eq i32 %16, 1
br i1 %17, label %18, label %20
18: ; preds = %0
%19 = call i32 @printf(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.5, i64 0, i64 0))
br label %22
20: ; preds = %0
%21 = call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.6, i64 0, i64 0))
br label %22
22: ; preds = %20, %18
ret i32 0
}

LLVM IR (-O2):
@.str = [19 x i8] c"Input a string 1: \00"
@.str.1 = [3 x i8] c"%s\00"
@.str.2 = [19 x i8] c"Input a string 2: \00"
@.str.3 = [24 x i8] c"Number of comparison?: \00"
@.str.4 = [3 x i8] c"%d\00"
@str = [6 x i8] c" Same\00"
@str.7 = [21 x i8] c" Something different\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [80 x i8]
%3 = alloca [80 x i8]
%4 = bitcast i32* %1 to i8*
%5 = getelementptr inbounds [80 x i8], [80 x i8]* %2, i64 0, i64 0
%6 = getelementptr inbounds [80 x i8], [80 x i8]* %3, i64 0, i64 0
%7 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([19 x i8], [19 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), i8* %5)
%9 = call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([19 x i8], [19 x i8]* @.str.2, i64 0, i64 0))
%10 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8* %6)
%11 = call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0))
%12 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0), i32* %1)
%13 = load i32, i32* %1
%14 = call i32 @str_ncmp(i8* %5, i8* %6, i32 %13)
%15 = icmp eq i32 %14, 1
%16 = select i1 %15, i8* getelementptr inbounds ([21 x i8], [21 x i8]* @str.7, i64 0, i64 0), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @str, i64 0, i64 0)
%17 = call i32 @puts(i8* dereferenceable(1) %16)
ret i32 0
}