Test questions

[minlow]

Hi, I can't find some of answers to the questions and I hope the forum can help:

1.Programs written in low-level languages usually execute ___(more accurately/less accurately/faster/slower)_ than programs written in high-level languages.

2. Is the expression sqrt(pow(abs(num1), num2)) is a valid expression?

3. Relational expressions are also called ____(paths/options/choice/conditions).

Thanks in advance!

[Azagaros]

These weren't in your textbook?

The first one is subjective and it depends on certain factors.

The second one I would run through a compiler to know for sure.....

isn't the 3rd one in most math books, most notable Calculus books?

[zb0S216C]

1. Not sure.

2. Best thing to do here is look at the documentation of all thee functions^[1][2][3].

3. Look at this code:

while( X < Y )
    // ... 

References:
std::pow( ): http://www.cplusplus.com/reference/clibrary/cmath/pow/
std::abs( ): http://www.cplusplus.com/reference/clibrary/cmath/abs/
std::sqrt( ): http://www.cplusplus.com/reference/clibrary/cmath/sqrt/

_Wazzak

[minlow]

Thanks, I managed to get the answers for Q2 & 3. Q1 is still confusing to me. Pls help if possible. Thanks again!

[hanst99]

The expected answer here is probably "faster".

[minlow]

Thanks hanst99, ans is faster.