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


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x1,-0xc(%rbp)
movl   $0x0,-0x10(%rbp)
lea    0xebc(%rip),%rdi
call   1030 <printf@plt>
lea    0xebe(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
movl   $0x1,-0xc(%rbp)
mov    -0xc(%rbp),%eax
cmp    -0x8(%rbp),%eax
jg     11c7 <main+0xa7>
lea    0xe9e(%rip),%rdi
call   1030 <printf@plt>
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
mov    -0xc(%rbp),%ecx
shl    $0x1,%ecx
sub    $0x1,%ecx
cmp    %ecx,%eax
je     11ad <main+0x8d>
lea    0xe79(%rip),%rdi
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    117f <main+0x5f>
lea    0xe61(%rip),%rdi
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1160 <main+0x40>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r14
push   %rbx
sub    $0x10,%rsp
lea    0xec1(%rip),%rdi
call   1040 <printf@plt>
lea    0xec3(%rip),%rdi
lea    0xc(%rsp),%rsi
call   1050 <scanf@plt>
cmpl   $0x0,0xc(%rsp)
jle    11aa <main+0x7a>
mov    $0x1,%ebx
mov    $0x1,%r14d
nopw   0x0(%rax,%rax,1)
mov    $0x20,%edi
call   1030 <putchar@plt>
mov    %ebx,%ebp
nopl   0x0(%rax)
mov    $0x2a,%edi
call   1030 <putchar@plt>
add    $0xffffffff,%ebp
jne    1180 <main+0x50>
mov    $0xa,%edi
call   1030 <putchar@plt>
lea    0x1(%r14),%eax
add    $0x2,%ebx
cmp    0xc(%rsp),%r14d
mov    %eax,%r14d
jl     1170 <main+0x40>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
pop    %r14
pop    %rbp
ret

LLVM IR (-O0):
@.str = [14 x i8] c"Enter number:\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
store i32 0, i32* %1
store i32 1, i32* %3
store i32 0, i32* %4
%5 = call i32 @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0))
%6 = 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 %7
7: ; preds = %26, %0
%8 = load i32, i32* %3
%9 = load i32, i32* %2
%10 = icmp sle i32 %8, %9
br i1 %10, label %11, label %29
11: ; preds = %7
%12 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
store i32 0, i32* %4
br label %13
13: ; preds = %21, %11
%14 = load i32, i32* %4
%15 = load i32, i32* %3
%16 = mul nsw i32 2, %15
%17 = sub nsw i32 %16, 1
%18 = icmp ne i32 %14, %17
br i1 %18, label %19, label %24
19: ; preds = %13
%20 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
br label %21
21: ; preds = %19
%22 = load i32, i32* %4
%23 = add nsw i32 %22, 1
store i32 %23, i32* %4
br label %13
24: ; preds = %13
%25 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.4, i64 0, i64 0))
br label %26
26: ; preds = %24
%27 = load i32, i32* %3
%28 = add nsw i32 %27, 1
store i32 %28, i32* %3
br label %7
29: ; preds = %7
ret i32 0
}

LLVM IR (-O2):
@.str = [14 x i8] c"Enter number:\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 ([14 x i8], [14 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 %22, label %7
7: ; preds = %0, %17
%8 = phi i32 [ %19, %17 ], [ 1, %0 ]
%9 = call i32 @putchar(i32 32)
%10 = shl nuw nsw i32 %8, 1
%11 = add nsw i32 %10, -1
br label %12
12: ; preds = %7, %12
%13 = phi i32 [ 0, %7 ], [ %15, %12 ]
%14 = call i32 @putchar(i32 42)
%15 = add nuw nsw i32 %13, 1
%16 = icmp eq i32 %15, %11
br i1 %16, label %17, label %12
17: ; preds = %12
%18 = call i32 @putchar(i32 10)
%19 = add nuw nsw i32 %8, 1
%20 = load i32, i32* %1
%21 = icmp slt i32 %8, %20
br i1 %21, label %7, label %22
22: ; preds = %17, %0
ret i32 0
}