C++

Question

Answer 1

The code will give compiler error because variable rem is not declared. Therefore answer is option A) code won’t compile.

Comments

If you observe more carefully there is a comma after declaring num = 5 and not semicolon, so rem is declared as an int. You may be confused because rem is on new line, but the variable declaration code is same as:

int num = 5, rem = num % 3;

So, the code will compile successfully and output would be option D i.e “Remainder is two”.

 

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My mistake option D) remainder is two will be the correct option. I missed the comma written over there.

Answer 2

The Ans is (b) 

 

The first ternary: (1 ? cout << "remainder is one" : rem == 2 ? cout << "remainder is two" : cout << "divisible by three");

• Since 1 is a non-zero value, the condition is considered true, so the first expression is executed:
• cout << "remainder is one".

Answer 3

Two errors:

1. Compilation error (not declared rem data type)

2. Syntax error ( ; not given after num = 5)

Answer 4

Option D is the correct answer.

There’s no syntax error in the code, it will calculate rem as 2, and provider output ‘remainder is two’