void loop

{

if((a==0)&&(b==0)&&(c==0)&&(d==1))

{

if((a==0)&&(b==0)&&(c==0)&&(d==1))

{

if((a==0)&&(b==0)&&(c==0)&&(d==1))

{

if((a==0)&&(b==0)&&(c==0)&&(d==1))

{

if((a==0)&&(b==0)&&(c==0)&&(d==1))

{

//my program here

}

}

}

}

}

you all would be knowing hoe to declare four digital pins as input and naming their input values as a, b, c, d.

the passcode here is 1111.

what I want to know is how to go back from the 3rd "if" statement to the 2nd "if" statement