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Declarations and Initializations - Point Out Correct Statements Multiple Questions and Answers.
Exercise Questions ::
Declarations and Initializations
| Answer: Option A |
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| Explanation: |
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int length; denotes that variable length is int(integer) data type.
char int; here int is a keyword cannot be used a variable name.
int long; here long is a keyword cannot be used a variable name.
float double; here double is a keyword cannot be used a variable name.
So, the answer is int length;(Option A). |
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Tutorial Link: |
Published by:Michael Daani
| 2. | Which of the following operations are INCORRECT? |
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| A. | int i = 35; i = i%5; |
| B. | short int j = 255; j = j; |
| C. | long int k = 365L; k = k; |
| D. | float a = 3.14; a = a%3; |
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| Answer: Option D |
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| Explanation: |
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float a = 3.14; a = a%3; gives "Illegal use of floating point" error.
The modulus (%) operator can only be used on integer types. We have to use fmod() function in math.h for float values. |
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Tutorial Link: |
Published by:Michael Daani
| Answer: Option C |
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| Explanation: |
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6.68 is double.
6.68L is long double constant.
6.68f is float constant.
6.68LF is not allowed in c. |
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Tutorial Link: |
Published by:Michael Daani
| 4. | Which of the structure is incorrect? |
| 1. struct aa
{
int a;
float b;
};
2. struct aa
{
int a;
float b;
struct aa var;
};
3. struct aa
{
int a;
float b;
struct aa *var;
};
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| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 1, 2, 3 |
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| Answer: Option B |
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| Explanation: |
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Option B gives "Undefined structure in 'aa'" error. |
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Tutorial Link: |
Published by:Michael Daani
| 5. | Which of the structure is correct? |
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1. struct book
{
char name[10];
float price;
int pages;
};
2. struct aa
{
char name[10];
float price;
int pages;
}
3. struct aa
{
char name[10];
float price;
int pages;
}
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| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | All of above |
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| Answer: Option A |
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| Explanation: |
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In 2 and 3 semicolon are missing in structure element. |
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Tutorial Link: |
Published by:Michael Daani
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