Using 'continue' with boolean-based statements in C - c

Question

For those of you who didn't understand - I KNOW this is NOT how a good code should look like... The purpose of this tricky question is to write a code without if-statements in order to practice boolean logic...
I'm trying to solve a question in C which restricts the programmer from using if/else/switch statements. cant use ternary operators either.
The idea is to use boolean based logical statements to get the "wanted path".
i.e - instead of:
if (1 > 0)
printf("TRUE")
else
printf("FALSE")
I would use:
bool res = true;
res = (1 > 0 && printf("TRUE")) || printf("FALSE")
(this is the general idea, using the boolean statement processing logic to manipulate different actions.
The only problem I ran into was to replace a part that looks somewhat like this (where i want the program to skip a certain part of the loop if A is equal to B):
while (...)
{
if (A == B)
continue;
//code
}
Do you know if this is possible to execute without using if/else/switch statements?
Thanks!!

Answer 1

The equivalent of your
while (condition)
{
foo();
if (A == B)
continue;
bar();
baz();
}
is
while (condition)
{
foo();
(A != B) && bar();
(A != B) && baz();
}
This assumes bar() doesn't change A or B. If it does, use a temporary variable:
while (condition)
{
foo();
bool cond = A != B;
cond && bar();
cond && baz();
}

Answer 2

Do you know if this is possible to execute without using if/else/switch statements?
With gcc extension statement expressions you can do this:
int main() {
int A, B;
while (1) {
A == B && ({continue;0;});
}
}
Please don't do this and please don't do res = (1 > 0 && printf("TRUE")) || printf("FALSE"). Just write ifs.

Answer 3

Assuming OK to use state variable then
while (...)
{
if (A == B)
continue;
//code
}
Can be implemented as
state = true ;
while ( ... ) {
...
while ( a == b ) {
state = false ;
break ;
} ;
while ( !state ) {
// code here
break ;
} ;
}
Or with fewer clutter, if allowed:
while (...)
{
state = A == B ;
while ( state ) {
//code here
break ;
} ;
}
With relatively minor performance penalty from having to double-test.
Side note: In my undergrad studies (many years ago), I recall hearing a lecture that explain that ALL control flow commands (if, while, do {} while, switch, with the exception of goto), can be implemented using the while. I wish I can find the reference/proof for that. This was part of a lecture about code verification.

Answer 4

if (1 > 0)
printf("TRUE")
else
printf("FALSE")
I would use:
bool res = true;
res = (1 > 0 && printf("TRUE")) || printf("FALSE")
If I see such a code written by any programmer in my team I would fire him/her.
Why? Your version is not human readable, it is error prone and almost not debugable.