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What is the output of following program?
void f1(){
extern int g;
static int s=5;
int a;
++g;
a=s++;
printf("%d%d%d",a,s,g);
if(a<=6)
f1();
printf("%d%d%d",a,s,g);
}
void f2(){
static int s;
int a;
a=++s;
++g;
printf("%d%d%d",a,s,g);
if(a<=2)
f2();
printf("%d%d%d",a,s,g);
}
main(){
f1();
f2();
}

A.	0 5 garbage	B.	1 6 1
C.	1 6 2	D.	error

Answer and Explanation

Answer:error

Explanation:
linking error undefined symbol - g

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