#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*/ exit(int);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ puts(char *);
int /*<<< orphan*/ scanf(char *, int *);
int main() {
  int nr_decks = 0;
  printf("Number of decks ? : ");
  scanf("%i", &nr_decks);
  if (nr_decks < 1) {
    puts("Error #decks");
    exit(1);
  } else {
    printf("Number of cards : %i\n", nr_decks * 52);
  }
  exit(0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
lea    0xea3(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xeaa(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1050 <scanf@plt>
cmpl   $0x1,-0x8(%rbp)
jge    1194 <main+0x54>
lea    0xe93(%rip),%rdi
call   1030 <puts@plt>
mov    $0x1,%edi
call   1060 <exit@plt>
imul   $0x34,-0x8(%rbp),%esi
lea    0xe86(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %edi,%edi
call   1060 <exit@plt>

x86 assembly (clang, -O2):
<main>:
push   %rax
movl   $0x0,0x4(%rsp)
lea    0xeb0(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xeb7(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
mov    0x4(%rsp),%eax
test   %eax,%eax
jg     1186 <main+0x46>
lea    0xea1(%rip),%rdi
call   1030 <puts@plt>
mov    $0x1,%edi
call   1060 <exit@plt>
imul   $0x34,%eax,%esi
lea    0xe95(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %edi,%edi
call   1060 <exit@plt>

LLVM IR (-O0):
@.str = [21 x i8] c"Number of decks ? : \00"
@.str.1 = [3 x i8] c"%i\00"
@.str.2 = [13 x i8] c"Error #decks\00"
@.str.3 = [22 x i8] c"Number of cards : %i\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 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* %2)
%5 = load i32, i32* %2
%6 = icmp slt i32 %5, 1
br i1 %6, label %7, label %10
7: ; preds = %0
%8 = call i32 @puts(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.2, i64 0, i64 0))
%9 = call i32 @exit(i32 1)
unreachable
10: ; preds = %0
%11 = load i32, i32* %2
%12 = mul nsw i32 %11, 52
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.3, i64 0, i64 0), i32 %12)
br label %14
14: ; preds = %10
%15 = call i32 @exit(i32 0)
unreachable
}

LLVM IR (-O2):
@.str = [21 x i8] c"Number of decks ? : \00"
@.str.1 = [3 x i8] c"%i\00"
@.str.2 = [13 x i8] c"Error #decks\00"
@.str.3 = [22 x i8] c"Number of cards : %i\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 ([21 x i8], [21 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 %7, label %10
7: ; preds = %0
%8 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.2, i64 0, i64 0))
%9 = call i32 @exit(i32 1)
unreachable
10: ; preds = %0
%11 = mul nsw i32 %5, 52
%12 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @.str.3, i64 0, i64 0), i32 %11)
%13 = call i32 @exit(i32 0)
unreachable
}