Latest Wipro Aptitude Question SOLUTION: One c program is written in 2 files /*Program1.c*/ int x=10 /*Program2.c*/ #include "Program1.c" int main() { extern int x; printf("x : %d",x); } In Program2.c statement ex

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(#M40035232) WIPRO Programming question C programming Keep an EYE

One c program is written in 2 files
/*Program1.c*/
int x=10

/*Program2.c*/
#include "Program1.c"
int main()
{
extern int x;
printf("x : %d",x);

}
In Program2.c statement extern int x; is not needed.
A. True
B. False

Asked In Wipro Subrata Patra (10 years ago)

Unsolved Read Solution (11)

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Read Solution (11) :

Saraswathy  (10 years ago)

A. True

Bcozzz in program1.c, x is not declared inside main() ... So its a global variable... It can be accessed by another file directly by including the filename in that file (ie should include "program1.c" in program2.c"]

This is more than enough to access the global variable of another file...
So extern int x is not needed...

Is this solution Helpfull? Yes (41) | No (2)  

Vishal Jaiswal  (9 years ago)

False
Since extern Keyword is used to link the variable to its value given outside the scope.Since x is defined and declared in another program so it is necessary

Is this solution Helpfull? Yes (7) | No (3)  

Akash Kumar  (9 years ago)

false,as extern keyword links the variable defined in two separate programs,otherwise it will treated as global variable in program1.c only.

Is this solution Helpfull? Yes (2) | No   

paul praveen  (9 years ago)

FALSE ....extern keyword is required because x is declared in another program

Is this solution Helpfull? Yes (1) | No   

Srinivas Rao  (9 years ago)

A.TRUE
BECAUSE X IS A GLOBAL VARIABLE

Is this solution Helpfull? Yes (1) | No (1)  

Haidar Ali  (9 years ago)

A) because variable is having global scope default

Is this solution Helpfull? Yes (1) | No (1)  

anchal jain  (10 years ago)

not need because x is already globally initiated

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payal mittal  (10 years ago)

true.becoz it is already included

Is this solution Helpfull? Yes | No (1)  

Situn  (9 years ago)

Yes It Is needed as We Included The prev PRog omn Prog2.c And extern is reqd to acess The vars from other files.............

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Surabhi S  (6 years ago)

A. True
In program 2.c .... extern int x; is not needed. x value will be 10 when it prints even if we not declare in 2.c, but we have to include file name of the program where we have declared and initialized the x.

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RANGASWAMY  (4 years ago)

the answer is false because extren is needed for accessing from the other files.

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