Class 6 Exam > Class 6 Questions > Which of the following statement is false?a)C...
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Which of the following statement is false?
- a)Constant variables need not be defined as they are declared and can be defined later
- b)Global constant variables are initialized to zero
- c)const keyword is used to define constant values
- d)You cannot reassign a value to a constant variable
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
Which of the following statement is false?a)Constant variables need no...
False Statement: a) Constant variables need not be defined as they are declared and can be defined later.
Explanation:
Constants are variables whose values cannot be changed once they are assigned. In most programming languages, constant variables need to be defined at the time of declaration and cannot be defined later. Therefore, statement a) is false.
Detailed Explanation:
1. Constant Variables:
- Constant variables are variables whose values remain the same throughout the program.
- They are declared using the const keyword.
- The value assigned to a constant variable cannot be modified once it is assigned.
2. Defining Constant Variables:
- Constant variables need to be defined at the time of declaration.
- They cannot be defined later in the program.
- Once a constant variable is declared and defined, its value remains constant throughout the program execution.
3. False Statement Explanation:
- Statement a) states that constant variables need not be defined as they are declared and can be defined later.
- However, this statement is incorrect.
- Constant variables require definition at the time of declaration, and their values cannot be changed later.
- If a constant variable is declared without a definition, it will result in a compilation error.
4. Correct Statements:
- b) Global constant variables are initialized to zero.
- Global constant variables, which are declared outside any function, are automatically initialized to zero if no initial value is specified.
- c) const keyword is used to define constant values.
- The const keyword is used to declare and define constant variables in programming languages.
- d) You cannot reassign a value to a constant variable.
- Once a value is assigned to a constant variable, it cannot be modified or reassigned throughout the program.
Conclusion:
Constant variables need to be defined at the time of declaration and cannot be defined later. Therefore, option 'a' is the false statement among the given options.
Explanation:
Constants are variables whose values cannot be changed once they are assigned. In most programming languages, constant variables need to be defined at the time of declaration and cannot be defined later. Therefore, statement a) is false.
Detailed Explanation:
1. Constant Variables:
- Constant variables are variables whose values remain the same throughout the program.
- They are declared using the const keyword.
- The value assigned to a constant variable cannot be modified once it is assigned.
2. Defining Constant Variables:
- Constant variables need to be defined at the time of declaration.
- They cannot be defined later in the program.
- Once a constant variable is declared and defined, its value remains constant throughout the program execution.
3. False Statement Explanation:
- Statement a) states that constant variables need not be defined as they are declared and can be defined later.
- However, this statement is incorrect.
- Constant variables require definition at the time of declaration, and their values cannot be changed later.
- If a constant variable is declared without a definition, it will result in a compilation error.
4. Correct Statements:
- b) Global constant variables are initialized to zero.
- Global constant variables, which are declared outside any function, are automatically initialized to zero if no initial value is specified.
- c) const keyword is used to define constant values.
- The const keyword is used to declare and define constant variables in programming languages.
- d) You cannot reassign a value to a constant variable.
- Once a value is assigned to a constant variable, it cannot be modified or reassigned throughout the program.
Conclusion:
Constant variables need to be defined at the time of declaration and cannot be defined later. Therefore, option 'a' is the false statement among the given options.
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Community Answer
Which of the following statement is false?a)Constant variables need no...
Since the constant variable has to be declared and defined at the same time, not doing it results in an error.
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Which of the following statement is false?a)Constant variables need not be defined as they are declared and can be defined laterb)Global constant variables are initialized to zeroc)const keyword is used to define constant valuesd)You cannot reassign a value to a constant variableCorrect answer is option 'A'. Can you explain this answer?
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