Choose true or false for each of the following statements: The semantics of appl

Question

Choose true or false for each of the following statements: The semantics of applying the plus operator to two int objects is to create a result object whose type is int and whose value is the concatenation of the operand values. Choose The semantics of applying the plus operator to two string objects is to create a result object whose type is string and whose value is the concatenation of the operand values. Choose A The semantics of applying the plus operator to two int objects is to create a resuie obiect whose type is int and whose value is the differece of the Choode. Choose $ operand values. The semantics of applying the plus operator to two float objects is to create a result object whose type is int and whose value is the sum of the squares of the operand values. Choose The semantics of applying the plus operator to one string object is to create a result object whose type is string and whose value is the operand value itself. Choose... +

Explanation / Answer

Solution:

1. True or False for the following statements:

(i) The semantics of applying the plus operator to two int objects is to create a result object whose type is int and whose value is the concatenation of the operand values.

Explanation: In this case, by applying the ‘+’ operator to two int object is to create a result object whose type is int and whose value is the sum of the operand values.

Answer: So it is False.

(ii) The semantics of applying the plus operator to two string objects is to create a result object whose type is string and whose value is the concatenation of the operand values.

Explanation: In this case, by applying the ‘+’ operator to two string object is to create a result object whose type is string and whose value is the concatenation of the operand values.

Answer: So it is True.

(iii) The semantics of applying the plus operator to two int objects is to create a result object whose type is int and whose value is the difference of the operand values.

Explanation: In this case, by applying the ‘+’ operator to two int object is to create a result object whose type is int and whose value is the sum of the operand values.

Answer: So it is False.

(iv) The semantics of applying the plus operator to two float objects is to create a result object whose type is int and whose value is the sum of the squares of the operand values.

Explanation: In this case, by applying the ‘+’ operator to two float object is to create a result object whose type is float and whose value is the sum of the operand values.

Answer: So it is False.

(v). The semantics of applying the plus operator to one string object is to create a result object whose type is string and whose value is the operand value itself.

Explanation: In this case, by applying the ‘+’ operator to two string object is to create a result object whose type is string and whose value is the concatenation of the operand values.

Answer: So it is False.

2. Choose correct statement

(i) The semantics of applying the minus operator to a string object is to report a syntax error.

False

(ii) The semantics of applying the minus operator to an int object is to create a result object whose type is int and whose value is the same as the value of the operand.

False

(iii) The semantics of applying the minus operator to a float object is to create a result object whose type is int and whose value is the negative of the operand value.

False

(iv) The semantics of applying the minus operator to a string object is to create a result object whose type is string and whose value is the negative of the operand value.

False

(v) The semantics of applying the minus operator to a string object is to report a type error.

Explanation: In this case, by applying the ‘+’ operator to two string object is to create a result object whose type is string and whose value is the concatenation of the operand values.

The ‘-’ operator is not used to concatenate strings. Therefore it is type error.

Answer: So it is True.

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