```csharp
using System;

class Program

```csharp
using System;

int main(){
    int a = 5;
    a = 4 & a;
    a == 4 ? 1 : 0;
    printf("%d", a);

int main(){
    int a = 5;
    a = 2 & a;
    a == 2 ? 1 : 0;
    printf("%d", a);

int main(){
    int a = 5;
    a = 2 & a;
    a = 2 ? 1 : 0;
    printf("%d", a);

int main(){
    int a = 5;
    a = 2 & a;
    a = 4 ? 1 : 0;
    printf("%d", a);

int main(){
    int a = 5;
    a = 2 & a;
    a = 4 ? 1 : 0;
    printf("%d", a);

int main(){
    int a = 5;
    a = 4 & a;
    a = 4 ? 1 : 0;
    printf("%d", a);

int main(){
    int a = 5;
    a = 4 & a;
    printf("%d", a);
    return 0;

int main(){
    int a = 5;
    a = 0b100 & a;
    printf("%d", a);
    return 0;

int main(){
    int a = 5;
    a = a >> 2;
    a = a & 1;
    printf("%d", a);

int main(){
    int a = 5;
    a = a >> 1;
    a = a & 1;
    printf("%d", a);

int main(){
    int a = 5;
    a = a >> 1;
    a = a & 0b1;
    printf("%d", a);

void main()
{
int a,b;
int const *ptr = &b;
ptr = &a;

void main()
{
int a,b;
const int *ptr = &b;
ptr = &a;

void main()
{
int a,b;
int *ptr = &b;
ptr = &a;

int main(){
    int a = 5;
    int b = 5;
    const int *ptr = &a;
    printf("%d", &a);

void main()
{
int a,b;
int *ptr = &b;
int *ptr = &a;

void main()
{
int a,b;
int *ptr = &b;
}

voind main()
{
int a,b;
int *ptr = &b;
}