#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);
int /*<<< orphan*/ scanf(char *, int *);
int main() {
  int num;
  int count = 0;
  scanf("%d", &num);
  if (0 == num)
    count = 1;
  while (num) {
    count += 1;
    num /= 10;
  }
  printf("%d", count);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0xc(%rbp)
lea    0xec3(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
xor    %eax,%eax
cmp    -0x8(%rbp),%eax
jne    1158 <main+0x38>
movl   $0x1,-0xc(%rbp)
jmp    115d <main+0x3d>
cmpl   $0x0,-0x8(%rbp)
je     1183 <main+0x63>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
mov    -0x8(%rbp),%eax
mov    $0xa,%ecx
cltd
idiv   %ecx
mov    %eax,-0x8(%rbp)
jmp    115d <main+0x3d>
mov    -0xc(%rbp),%esi
lea    0xe73(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xed8(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%eax
test   %eax,%eax
je     1168 <main+0x48>
xor    %esi,%esi
nopl   0x0(%rax)
add    $0x1,%esi
movslq %eax,%rcx
imul   $0x66666667,%rcx,%rax
mov    %rax,%rdx
shr    $0x3f,%rdx
sar    $0x22,%rax
add    %edx,%eax
add    $0x9,%ecx
cmp    $0x12,%ecx
ja     1140 <main+0x20>
mov    %eax,0x4(%rsp)
jmp    116d <main+0x4d>
mov    $0x1,%esi
lea    0xe8c(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%d\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %3
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %2)
%5 = load i32, i32* %2
%6 = icmp eq i32 0, %5
br i1 %6, label %7, label %8
7: ; preds = %0
store i32 1, i32* %3
br label %8
8: ; preds = %7, %0
br label %9
9: ; preds = %12, %8
%10 = load i32, i32* %2
%11 = icmp ne i32 %10, 0
br i1 %11, label %12, label %17
12: ; preds = %9
%13 = load i32, i32* %3
%14 = add nsw i32 %13, 1
store i32 %14, i32* %3
%15 = load i32, i32* %2
%16 = sdiv i32 %15, 10
store i32 %16, i32* %2
br label %9
17: ; preds = %9
%18 = load i32, i32* %3
%19 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32 %18)
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"%d\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %1)
%4 = load i32, i32* %1
%5 = icmp eq i32 %4, 0
br i1 %5, label %14, label %6
6: ; preds = %0, %6
%7 = phi i32 [ %9, %6 ], [ 0, %0 ]
%8 = phi i32 [ %10, %6 ], [ %4, %0 ]
%9 = add nuw nsw i32 %7, 1
%10 = sdiv i32 %8, 10
%11 = add i32 %8, 9
%12 = icmp ult i32 %11, 19
br i1 %12, label %13, label %6
13: ; preds = %6
store i32 %10, i32* %1
br label %14
14: ; preds = %13, %0
%15 = phi i32 [ %9, %13 ], [ 1, %0 ]
%16 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32 %15)
ret i32 0
}