#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 atoi(char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *);
int /*<<< orphan*/ itoa(int, char *, int);
int /*<<< orphan*/ printf(char *, char *);
int /*<<< orphan*/ stderr;
int main(int argc, char **argv) {
  if (argc != 3) {
    fprintf(stderr, "?\n\n");
    return 42;
  }
  int n = atoi(argv[1]);
  int w = atoi(argv[2]);
  char str[0x100];
  itoa(n, str, w);
  printf("[%s]\n", str);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x120,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x3,-0x8(%rbp)
je     1184 <main+0x44>
mov    0x2e76(%rip),%rax
mov    (%rax),%edi
lea    0xe8d(%rip),%rsi
call   1040 <fprintf@plt>
movl   $0x2a,-0x4(%rbp)
jmp    11d0 <main+0x90>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1050 <atoi@plt>
mov    %eax,-0x14(%rbp)
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rdi
call   1050 <atoi@plt>
mov    %eax,-0x18(%rbp)
mov    -0x14(%rbp),%edi
lea    -0x120(%rbp),%rsi
mov    -0x18(%rbp),%edx
call   1060 <itoa@plt>
lea    -0x120(%rbp),%rsi
lea    0xe40(%rip),%rdi
call   1030 <printf@plt>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x120,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %rbx
sub    $0x108,%rsp
cmp    $0x3,%edi
jne    1187 <main+0x47>
mov    %rsi,%rbx
mov    0x8(%rsi),%rdi
call   1050 <atoi@plt>
mov    %eax,%ebp
mov    0x10(%rbx),%rdi
call   1050 <atoi@plt>
mov    %rsp,%rbx
mov    %ebp,%edi
mov    %rbx,%rsi
mov    %eax,%edx
call   1060 <itoa@plt>
lea    0xe89(%rip),%rdi
mov    %rbx,%rsi
call   1030 <printf@plt>
xor    %eax,%eax
jmp    11a1 <main+0x61>
mov    0x2e52(%rip),%rax
mov    (%rax),%edi
lea    0xe69(%rip),%rsi
call   1040 <fprintf@plt>
mov    $0x2a,%eax
add    $0x108,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@stderr = global i32 0
@.str = [4 x i8] c"?\0A\0A\00"
@.str.1 = [6 x i8] c"[%s]\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca i32
%8 = alloca [256 x i8]
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%9 = load i32, i32* %4
%10 = icmp ne i32 %9, 3
br i1 %10, label %11, label %14
11: ; preds = %2
%12 = load i32, i32* @stderr
%13 = call i32 @fprintf(i32 %12, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0))
store i32 42, i32* %3
br label %29
14: ; preds = %2
%15 = load i8**, i8*** %5
%16 = getelementptr inbounds i8*, i8** %15, i64 1
%17 = load i8*, i8** %16
%18 = call i32 @atoi(i8* %17)
store i32 %18, i32* %6
%19 = load i8**, i8*** %5
%20 = getelementptr inbounds i8*, i8** %19, i64 2
%21 = load i8*, i8** %20
%22 = call i32 @atoi(i8* %21)
store i32 %22, i32* %7
%23 = load i32, i32* %6
%24 = getelementptr inbounds [256 x i8], [256 x i8]* %8, i64 0, i64 0
%25 = load i32, i32* %7
%26 = call i32 @itoa(i32 %23, i8* %24, i32 %25)
%27 = getelementptr inbounds [256 x i8], [256 x i8]* %8, i64 0, i64 0
%28 = call i32 @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i8* %27)
store i32 0, i32* %3
br label %29
29: ; preds = %14, %11
%30 = load i32, i32* %3
ret i32 %30
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [4 x i8] c"?\0A\0A\00"
@.str.1 = [6 x i8] c"[%s]\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = alloca [256 x i8]
%4 = icmp eq i32 %0, 3
br i1 %4, label %8, label %5
5: ; preds = %2
%6 = load i32, i32* @stderr
%7 = tail call i32 @fprintf(i32 %6, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0))
br label %18
8: ; preds = %2
%9 = getelementptr inbounds i8*, i8** %1, i64 1
%10 = load i8*, i8** %9
%11 = tail call i32 @atoi(i8* %10)
%12 = getelementptr inbounds i8*, i8** %1, i64 2
%13 = load i8*, i8** %12
%14 = tail call i32 @atoi(i8* %13)
%15 = getelementptr inbounds [256 x i8], [256 x i8]* %3, i64 0, i64 0
%16 = call i32 @itoa(i32 %11, i8* %15, i32 %14)
%17 = call i32 @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i8* %15)
br label %18
18: ; preds = %8, %5
%19 = phi i32 [ 42, %5 ], [ 0, %8 ]
ret i32 %19
}