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C Programming - Declarations and Initializations - Discussion

Discussion Forum : Declarations and Initializations - General Questions (Q.No. 10)
Declarations and Initializations
10.
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;
extern int a is declaration, int a = 20 is the definition
int a = 20 is declaration, extern int a is the definition
int a = 20 is definition, a is not defined
a is declared, a is not defined
Answer: Option
Explanation:

- During declaration we tell the datatype of the Variable.

- During definition the value is initialized.

Discussion:
44 comments Page 5 of 5.
Vasudevan said:   1 decade ago
int a=20;(it is a outside of initialization)
how it consider for this program
Snehal kadam said:   1 decade ago
In above option is D option correct??
in place of C
Snehal kadam said:   1 decade ago
In main, "extern int a" is declaration is ok.
but it is defined in outside;
so ,is the option c is correct???
Om tripathi said:   1 decade ago
int a=20; is outside the main
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