Difficulty: Medium

Average Score: 60%

Consider the given function.
function F(string s1, string s2)
Put sl to output
Put" and " to output
Put s2 to output

What is the total output when F(sign, horse) is called 2 ×?

Rationale

Calling F(sign, horse) two times outputs "sign and horse and sign and horse".

The function F concatenates the first string (s1) with the phrase " and " and then the second string (s2). When called twice, it results in the complete output being repeated, leading to the final output.

A (sign and horse) YOUR ANSWER

This output represents the result of calling the function F once with the inputs "sign" and "horse." However, it does not account for the second call, which is necessary to reach the total output described in the question.

B (sign and horse) YOUR ANSWER

Similar to choice A, this option also reflects the output of a single call to F with the same inputs. Without the second invocation of the function, it fails to capture the complete output when F is called two times.

C (sign and horsesign and horse) YOUR ANSWER

This choice mistakenly combines the outputs of two calls into a single string without the necessary conjunction " and ". Therefore, it does not accurately represent the correct output format required when calling the function twice.

D (sign and horse and sign and horse) CORRECT

This is the accurate output when the function F is called two times with "sign" and "horse" as arguments. The first call produces "sign and horse," followed by " and " concatenated with the result of the second call, resulting in the full output of "sign and horse and sign and horse."

E (sign and horse sign and horse) YOUR ANSWER

This choice improperly omits the conjunction "and" between the two outputs. Instead, it presents them as a continuous string, which does not conform to the expected output format of the function when called twice.

Conclusion

When the function F is invoked twice with the same parameters, it yields a combined output that precisely reflects the structure of its operation. The correct output, "sign and horse and sign and horse," demonstrates how the function's design allows for repeated concatenation, facilitating a clear understanding of string manipulation in programming.

What is the total output when F(sign, horse) is called 2 ×?

Calling F(sign, horse) two times outputs "sign and horse and sign and horse".

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