identify which of the following are declarations 1 extern int x 2..., Basic, C Language

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Question:Identify which of the following are declarations
1 :	extern int x;
2 :	float square ( float x ) { ... }
3 :	double pow(double, double);

A 1 
B 2 
C 1 and 3 
D 2

+ AnswerC

+ Explanationextern 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.

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Question:Identify which of the following are declarations 1 : extern int x; 2 : float square ( float x ) { ... } 3 : double pow(double, double);

A 1

B 2

C 1 and 3

D 2

C