#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() {
  int n, j, a, i;
  printf("Enter n:");
  scanf("%d", &n);
  j = n;
  for (a = 1; a <= n; a++) {
    for (i = 1; i < j; i++) {
      printf(" ");
    }
    for (i = 1; i <= 2 * a - 1; i++) {
      printf("*");
    }
    j--;
    printf("\n");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
call   1030 <printf@plt>
lea    0xec7(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
mov    %eax,-0xc(%rbp)
movl   $0x1,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0x8(%rbp),%eax
jg     11e9 <main+0xc9>
movl   $0x1,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    1191 <main+0x71>
lea    0xe8e(%rip),%rdi
call   1030 <printf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    116b <main+0x4b>
movl   $0x1,-0x14(%rbp)
mov    -0x14(%rbp),%eax
mov    -0x10(%rbp),%ecx
shl    $0x1,%ecx
sub    $0x1,%ecx
cmp    %ecx,%eax
jg     11c6 <main+0xa6>
lea    0xe5b(%rip),%rdi
call   1030 <printf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1198 <main+0x78>
mov    -0xc(%rbp),%eax
add    $0xffffffff,%eax
mov    %eax,-0xc(%rbp)
lea    0xe3a(%rip),%rdi
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1158 <main+0x38>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %r12
push   %rbx
sub    $0x10,%rsp
lea    0xebd(%rip),%rdi
call   1040 <printf@plt>
lea    0xeba(%rip),%rdi
lea    0xc(%rsp),%rsi
call   1050 <scanf@plt>
mov    0xc(%rsp),%r14d
test   %r14d,%r14d
jle    11dc <main+0xac>
mov    $0x1,%r15d
mov    $0x1,%ebp
mov    %r14d,%r12d
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax,%rax,1)
cmp    $0x2,%r12d
jl     11a1 <main+0x71>
mov    %r14d,%ebx
nopl   0x0(%rax)
mov    $0x20,%edi
call   1030 <putchar@plt>
add    $0xffffffff,%ebx
cmp    %ebx,%ebp
jne    1190 <main+0x60>
mov    %r15d,%ebx
cs nopw 0x0(%rax,%rax,1)
xchg   %ax,%ax
mov    $0x2a,%edi
call   1030 <putchar@plt>
add    $0xffffffff,%ebx
jne    11b0 <main+0x80>
add    $0xffffffff,%r12d
mov    $0xa,%edi
call   1030 <putchar@plt>
lea    0x1(%rbp),%eax
add    $0x2,%r15d
cmp    0xc(%rsp),%ebp
mov    %eax,%ebp
jl     1180 <main+0x50>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [9 x i8] c"Enter n:\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [2 x i8] c" \00"
@.str.3 = [2 x i8] c"*\00"
@.str.4 = [2 x i8] c"\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
store i32 0, i32* %1
%6 = call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%8 = load i32, i32* %2
store i32 %8, i32* %3
store i32 1, i32* %4
br label %9
9: ; preds = %39, %0
%10 = load i32, i32* %4
%11 = load i32, i32* %2
%12 = icmp sle i32 %10, %11
br i1 %12, label %13, label %42
13: ; preds = %9
store i32 1, i32* %5
br label %14
14: ; preds = %20, %13
%15 = load i32, i32* %5
%16 = load i32, i32* %3
%17 = icmp slt i32 %15, %16
br i1 %17, label %18, label %23
18: ; preds = %14
%19 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
br label %20
20: ; preds = %18
%21 = load i32, i32* %5
%22 = add nsw i32 %21, 1
store i32 %22, i32* %5
br label %14
23: ; preds = %14
store i32 1, i32* %5
br label %24
24: ; preds = %32, %23
%25 = load i32, i32* %5
%26 = load i32, i32* %4
%27 = mul nsw i32 2, %26
%28 = sub nsw i32 %27, 1
%29 = icmp sle i32 %25, %28
br i1 %29, label %30, label %35
30: ; preds = %24
%31 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
br label %32
32: ; preds = %30
%33 = load i32, i32* %5
%34 = add nsw i32 %33, 1
store i32 %34, i32* %5
br label %24
35: ; preds = %24
%36 = load i32, i32* %3
%37 = add nsw i32 %36, -1
store i32 %37, i32* %3
%38 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.4, i64 0, i64 0))
br label %39
39: ; preds = %35
%40 = load i32, i32* %4
%41 = add nsw i32 %40, 1
store i32 %41, i32* %4
br label %9
42: ; preds = %9
ret i32 0
}

LLVM IR (-O2):
@.str = [9 x i8] c"Enter n:\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 @printf(i8* dereferenceable(1) getelementptr inbounds ([9 x i8], [9 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 %30, label %7
7: ; preds = %0, %23
%8 = phi i32 [ %29, %23 ], [ 2, %0 ]
%9 = phi i32 [ %26, %23 ], [ 1, %0 ]
%10 = phi i32 [ %24, %23 ], [ %5, %0 ]
%11 = icmp sgt i32 %10, 1
br i1 %11, label %12, label %17
12: ; preds = %7, %12
%13 = phi i32 [ %15, %12 ], [ 1, %7 ]
%14 = call i32 @putchar(i32 32)
%15 = add nuw nsw i32 %13, 1
%16 = icmp eq i32 %15, %10
br i1 %16, label %17, label %12
17: ; preds = %12, %7
br label %18
18: ; preds = %17, %18
%19 = phi i32 [ %21, %18 ], [ 1, %17 ]
%20 = call i32 @putchar(i32 42)
%21 = add nuw i32 %19, 1
%22 = icmp eq i32 %21, %8
br i1 %22, label %23, label %18
23: ; preds = %18
%24 = add nsw i32 %10, -1
%25 = call i32 @putchar(i32 10)
%26 = add nuw nsw i32 %9, 1
%27 = load i32, i32* %1
%28 = icmp slt i32 %9, %27
%29 = add i32 %8, 2
br i1 %28, label %7, label %30
30: ; preds = %23, %0
ret i32 0
}