#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 *);
int main(void) {
  int n = 0, i = 0;
  printf("N的值: ");
  scanf("%d", &n);
  for (i = 1; i <= n; i++) {
    printf("%d的二次方是: %d\n", i, i * i);
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
movl   $0x0,-0xc(%rbp)
lea    0xebc(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeb8(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
movl   $0x1,-0xc(%rbp)
mov    -0xc(%rbp),%eax
cmp    -0x8(%rbp),%eax
jg     1194 <main+0x74>
mov    -0xc(%rbp),%esi
mov    -0xc(%rbp),%edx
imul   -0xc(%rbp),%edx
lea    0xe8e(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1162 <main+0x42>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %rbx
push   %rax
movl   $0x0,0x4(%rsp)
lea    0xece(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xeca(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
cmpl   $0x0,0x4(%rsp)
jle    117a <main+0x5a>
lea    0xeb5(%rip),%rbx
xor    %ebp,%ebp
nopw   0x0(%rax,%rax,1)
add    $0x1,%ebp
mov    %ebp,%edx
imul   %ebp,%edx
mov    %rbx,%rdi
mov    %ebp,%esi
xor    %eax,%eax
call   1030 <printf@plt>
cmp    0x4(%rsp),%ebp
jl     1160 <main+0x40>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [10 x i8] c"N\E7\9A\84\E5\80\BC: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [23 x i8] c"%d\E7\9A\84\E4\BA\8C\E6\AC\A1\E6\96\B9\E6\98\AF: %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
store i32 0, i32* %3
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 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* %2)
store i32 1, i32* %3
br label %6
6: ; preds = %16, %0
%7 = load i32, i32* %3
%8 = load i32, i32* %2
%9 = icmp sle i32 %7, %8
br i1 %9, label %10, label %19
10: ; preds = %6
%11 = load i32, i32* %3
%12 = load i32, i32* %3
%13 = load i32, i32* %3
%14 = mul nsw i32 %12, %13
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0), i32 %11, i32 %14)
br label %16
16: ; preds = %10
%17 = load i32, i32* %3
%18 = add nsw i32 %17, 1
store i32 %18, i32* %3
br label %6
19: ; preds = %6
ret i32 0
}

LLVM IR (-O2):
@.str = [10 x i8] c"N\E7\9A\84\E5\80\BC: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [23 x i8] c"%d\E7\9A\84\E4\BA\8C\E6\AC\A1\E6\96\B9\E6\98\AF: %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
store i32 0, i32* %1
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([10 x i8], [10 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, 1
br i1 %6, label %14, label %7
7: ; preds = %0, %7
%8 = phi i32 [ %11, %7 ], [ 1, %0 ]
%9 = mul nsw i32 %8, %8
%10 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0), i32 %8, i32 %9)
%11 = add nuw nsw i32 %8, 1
%12 = load i32, i32* %1
%13 = icmp slt i32 %8, %12
br i1 %13, label %7, label %14
14: ; preds = %7, %0
ret i32 0
}