C Programming - Declarations and Initializations - Discussion
Discussion Forum : Declarations and Initializations - General Questions (Q.No. 9)
9.
Identify which of the following are declarations
| 1 : | extern int x; |
| 2 : | float square ( float x ) { ... } |
| 3 : | double pow(double, double); |
Answer: Option
Explanation:
extern int x; - is an external variable declaration.
double pow(double, double); - is a function prototype declaration.
Therefore, 1 and 3 are declarations. 2 is definition.
double pow(double, double); - is a function prototype declaration.
Therefore, 1 and 3 are declarations. 2 is definition.
Discussion:
37 comments Page 2 of 4.
Sundar said:
1 decade ago
Hi Haritha,
It is the actual definition for the function 'square', which may or may not be declared previously.
It is the actual definition for the function 'square', which may or may not be declared previously.
Tharun said:
4 years ago
During declaration, we tell the datatype of the Variable.
During definition, the value is initialized.
During definition, the value is initialized.
Tunu said:
1 decade ago
During declaration we tell the datatype of the Variable.
During definition the value is initialized.
During definition the value is initialized.
Xyz said:
1 decade ago
float x;
Is this statement a declaration or definition?
It was mentioned as a definition in book.
Is this statement a declaration or definition?
It was mentioned as a definition in book.
Aishu said:
1 decade ago
Can you tel me what is the difference between declaration and definition and state some examples?
@ deepti: said:
1 decade ago
What are string? how are they declared? and what is the null character ?why is it important?
Prabhu said:
1 decade ago
Declaration never reserves any space for the variable or instance in the program's memory.
Lipsha said:
1 decade ago
What is the difference between actual definition & formal definition?
Priyanga said:
10 years ago
Can anyone explain more about float square (float x) {....} clearly?
Aisha said:
8 years ago
Can you give an eg for initialization and explanation for output?
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