Solution to interview question about coding

[bharat_in]

Re: interview question

assign c= foo ? a:b;

For above statement, what will be the value of c, when all foo, a and b are "z"?

 

[armardu]

interview question

with the synthesis perspective, the first statement synthesizes to "MUX" and the second one synthesizes to a "PRIORITY ENCODER"

 

[krishna_1980]

interview question

In simulation it will have problem only when selection line is "X". Otherwise there is no difference after synthesis, whether you implement with ternary or if/else?

 

[pramodm]

interview question

I think, the differece is

the statemenyt c = foo ? a : b; is a concurent statement that any signal changes in LHS, a new value is assigned to RHS

but for statement if (foo) c = a; else c = b; is procedural statement that must written in always
if we are not include all the signals on LHS in sensitivity list the result will different from first one, otherwise it must same