Railways Exam > Railways Questions > What is sizeof() in C?a)Operatorb)Functionc)...
Start Learning for Free
What is sizeof() in C?
- a)Operator
- b)Function
- c)Macro
- d)None of these
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
What is sizeof() in C?a)Operatorb)Functionc)Macrod)None of theseCorre...
Sizeof is a much-used operator in the C programming language. It is a compile time unary operator which can be used to compute the size of its operand. The result of sizeof is of unsigned integral type which is usually denoted by size_t.
Free Test
FREE
| Start Free Test |
Community Answer
What is sizeof() in C?a)Operatorb)Functionc)Macrod)None of theseCorre...
sizeof() in C
Definition:
The sizeof() is an operator in C programming language that is used to determine the size of a variable or data type. It returns the size in bytes.
Operator:
The sizeof() is considered as an operator in C because it is used to perform a specific operation on the operand (variable or data type) to determine its size.
Syntax:
The syntax for using sizeof() operator is as follows:
sizeof(variable)
sizeof(data_type)
Example:
Let's consider an example to understand the usage of sizeof() operator:
```
#include
int main() {
int num;
float f;
char ch;
printf("Size of int: %d bytes\n", sizeof(num));
printf("Size of float: %d bytes\n", sizeof(f));
printf("Size of char: %d bytes\n", sizeof(ch));
return 0;
}
```
Output:
```
Size of int: 4 bytes
Size of float: 4 bytes
Size of char: 1 byte
```
Explanation:
- In the above example, we have declared three variables of different data types: `int`, `float`, and `char`.
- We used the sizeof() operator to determine the size of each variable and printed the result using printf() function.
- The output shows the size of an `int` and `float` variable is 4 bytes each, while the size of a `char` variable is 1 byte.
- The sizeof() operator calculates the size in bytes based on the data type, and the result is returned as an integer value.
Conclusion:
In conclusion, the sizeof() operator in C is used to determine the size of a variable or data type. It is considered as an operator because it performs an operation on the operand to calculate its size. The result is returned as an integer value representing the size in bytes. This operator is useful in various scenarios, such as memory allocation, array declaration, and understanding the storage requirements of different data types.
Definition:
The sizeof() is an operator in C programming language that is used to determine the size of a variable or data type. It returns the size in bytes.
Operator:
The sizeof() is considered as an operator in C because it is used to perform a specific operation on the operand (variable or data type) to determine its size.
Syntax:
The syntax for using sizeof() operator is as follows:
sizeof(variable)
sizeof(data_type)
Example:
Let's consider an example to understand the usage of sizeof() operator:
```
#include
int main() {
int num;
float f;
char ch;
printf("Size of int: %d bytes\n", sizeof(num));
printf("Size of float: %d bytes\n", sizeof(f));
printf("Size of char: %d bytes\n", sizeof(ch));
return 0;
}
```
Output:
```
Size of int: 4 bytes
Size of float: 4 bytes
Size of char: 1 byte
```
Explanation:
- In the above example, we have declared three variables of different data types: `int`, `float`, and `char`.
- We used the sizeof() operator to determine the size of each variable and printed the result using printf() function.
- The output shows the size of an `int` and `float` variable is 4 bytes each, while the size of a `char` variable is 1 byte.
- The sizeof() operator calculates the size in bytes based on the data type, and the result is returned as an integer value.
Conclusion:
In conclusion, the sizeof() operator in C is used to determine the size of a variable or data type. It is considered as an operator because it performs an operation on the operand to calculate its size. The result is returned as an integer value representing the size in bytes. This operator is useful in various scenarios, such as memory allocation, array declaration, and understanding the storage requirements of different data types.
|
Explore Courses for Railways exam
|
|
Top Courses for RailwaysView all
Question Description
What is sizeof() in C?a)Operatorb)Functionc)Macrod)None of theseCorrect answer is option 'A'. Can you explain this answer? for Railways 2025 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about What is sizeof() in C?a)Operatorb)Functionc)Macrod)None of theseCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Railways 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is sizeof() in C?a)Operatorb)Functionc)Macrod)None of theseCorrect answer is option 'A'. Can you explain this answer?.
What is sizeof() in C?a)Operatorb)Functionc)Macrod)None of theseCorrect answer is option 'A'. Can you explain this answer? for Railways 2025 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about What is sizeof() in C?a)Operatorb)Functionc)Macrod)None of theseCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Railways 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is sizeof() in C?a)Operatorb)Functionc)Macrod)None of theseCorrect answer is option 'A'. Can you explain this answer?.
Solutions for What is sizeof() in C?a)Operatorb)Functionc)Macrod)None of theseCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Railways.
Download more important topics, notes, lectures and mock test series for Railways Exam by signing up for free.
Here you can find the meaning of What is sizeof() in C?a)Operatorb)Functionc)Macrod)None of theseCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
What is sizeof() in C?a)Operatorb)Functionc)Macrod)None of theseCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for What is sizeof() in C?a)Operatorb)Functionc)Macrod)None of theseCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of What is sizeof() in C?a)Operatorb)Functionc)Macrod)None of theseCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice What is sizeof() in C?a)Operatorb)Functionc)Macrod)None of theseCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Railways tests.
|
|
Explore Courses for Railways exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup