#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 recurSumOfDigits(int);
int /*<<< orphan*/ scanf(char *, int *);
int sumOfDigits(int);
int main() {
  int num;
  printf("Enter number to be summed: ");
  scanf("%d", &num);
  printf("Digits summed: %d\n", sumOfDigits(num));
  printf("Digits summed: %d", recurSumOfDigits(num));
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xeb1(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xee1(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1060 <scanf@plt>
mov    -0x4(%rbp),%edi
call   1030 <sumOfDigits@plt>
mov    %eax,%esi
lea    0xea5(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x4(%rbp),%edi
call   1050 <recurSumOfDigits@plt>
mov    %eax,%esi
lea    0xea0(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xeb8(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xee8(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1060 <scanf@plt>
mov    0x4(%rsp),%edi
call   1030 <sumOfDigits@plt>
lea    0xeac(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x4(%rsp),%edi
call   1050 <recurSumOfDigits@plt>
lea    0xea6(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [28 x i8] c"Enter number to be summed: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [19 x i8] c"Digits summed: %d\0A\00"
@.str.3 = [18 x i8] c"Digits summed: %d\00"
define i32 @main() {
%1 = alloca i32
%2 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0))
%3 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%4 = load i32, i32* %1
%5 = call i32 @sumOfDigits(i32 %4)
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.2, i64 0, i64 0), i32 %5)
%7 = load i32, i32* %1
%8 = call i32 @recurSumOfDigits(i32 %7)
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.3, i64 0, i64 0), i32 %8)
ret i32 0
}

LLVM IR (-O2):
@.str = [28 x i8] c"Enter number to be summed: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [19 x i8] c"Digits summed: %d\0A\00"
@.str.3 = [18 x i8] c"Digits summed: %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 ([28 x i8], [28 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 = call i32 @sumOfDigits(i32 %5)
%7 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([19 x i8], [19 x i8]* @.str.2, i64 0, i64 0), i32 %6)
%8 = load i32, i32* %1
%9 = call i32 @recurSumOfDigits(i32 %8)
%10 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([18 x i8], [18 x i8]* @.str.3, i64 0, i64 0), i32 %9)
ret i32 0
}