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Question


In the following program where is the variable a getting defined and where it is
getting declared?


#include<stdio> .h>
int main()
{
extern int a;
printf("%d\n", a);
return 0;
}
int a = 20;
Options:
A .  extern int a is declaration, int a = 20 is the definition
B .  int a = 20 is declaration, extern int a is the definition
C .  int a = 20 is definition, a is not defined
D .  a is declared, a is not defined
Answer: Option A

- During declaration we tell the datatype of the Variable.

- During definition the value is initialized.




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