#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*/ putchar(char);
int /*<<< orphan*/ scanf(char *, int *);
int main(void) {
  int i, no;
  printf("请输入一个正整数");
  scanf("%d", &no);
  for (i = 0; i <= no; i++)
    printf("%d", i);
  putchar('\n');
  return (0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeba(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xec5(%rip),%rdi
lea    -0xc(%rbp),%rsi
call   1050 <scanf@plt>
movl   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%eax
cmp    -0xc(%rbp),%eax
jg     118f <main+0x5f>
mov    -0x8(%rbp),%esi
lea    0xe9f(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1164 <main+0x34>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
lea    0xec5(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xed0(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
cmpl   $0x0,0x4(%rsp)
js     1185 <main+0x55>
mov    $0xffffffff,%ebx
lea    0xeb3(%rip),%r14
cs nopw 0x0(%rax,%rax,1)
add    $0x1,%ebx
mov    %r14,%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1040 <printf@plt>
cmp    0x4(%rsp),%ebx
jl     1170 <main+0x40>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [25 x i8] c"\E8\AF\B7\E8\BE\93\E5\85\A5\E4\B8\80\E4\B8\AA\E6\AD\A3\E6\95\B4\E6\95\B0\00"
@.str.1 = [3 x i8] c"%d\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %3)
store i32 0, i32* %2
br label %6
6: ; preds = %13, %0
%7 = load i32, i32* %2
%8 = load i32, i32* %3
%9 = icmp sle i32 %7, %8
br i1 %9, label %10, label %16
10: ; preds = %6
%11 = load i32, i32* %2
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32 %11)
br label %13
13: ; preds = %10
%14 = load i32, i32* %2
%15 = add nsw i32 %14, 1
store i32 %15, i32* %2
br label %6
16: ; preds = %6
%17 = call i32 @putchar(i8 signext 10)
ret i32 0
}

LLVM IR (-O2):
@.str = [25 x i8] c"\E8\AF\B7\E8\BE\93\E5\85\A5\E4\B8\80\E4\B8\AA\E6\AD\A3\E6\95\B4\E6\95\B0\00"
@.str.1 = [3 x i8] c"%d\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%5 = load i32, i32* %1
%6 = icmp slt i32 %5, 0
br i1 %6, label %13, label %7
7: ; preds = %0, %7
%8 = phi i32 [ %10, %7 ], [ 0, %0 ]
%9 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32 %8)
%10 = add nuw nsw i32 %8, 1
%11 = load i32, i32* %1
%12 = icmp slt i32 %8, %11
br i1 %12, label %7, label %13
13: ; preds = %7, %0
%14 = call i32 @putchar(i8 signext 10)
ret i32 0
}