C Interview Questions For Recent graduates and Experienced professionals to gain the knowledge for the C Interview.
1:
swap(int x,y)
{
<code>int temp;
temp=x;
x=y;
y=temp;
}
main()
{
int x=2;y=3;
swap(x,y);
}after calling swap ,what are the values x&y?
2:
struct base {int a,b;
base();
int virtual function1();
}
struct derv1:base{
int b,c,d;
derv1()
int virtual function1();
}
struct derv2 : base
{int a,e;
}
base::base()
{
a=2;b=3;
}
derv1::derv1(){
b=5;
c=10;d=11;}
base::function1()
{return(100);
}
derv1::function1()
{
return(200);
}
main()
base ba;
derv1 d1,d2;
printf("%d %d",d1.a,d1.b)
o/p is
a)a=2;b=3;
b)a=3; b=2;
c)a=5; b=10;
d)none
3:
struct base {int a,b;
base();
int virtual function1();
}
struct derv1:base{
int b,c,d;
derv1()
int virtual function1();
}
struct derv2 : base
{int a,e;
}
base::base()
{
a=2;b=3;
}
derv1::derv1(){
b=5;
c=10;d=11;}
base::function1()
{return(100);
}
derv1::function1()
{
return(200);
}
main()
base ba;
derv1 d1,d2;
printf("%d %d",d1.a,d1.b)o/p is
a)a=2;b=3;
b)a=3; b=2;
c)a=5; b=10;
d)none
4: for the above program answer the following q’s
main()
base da;
derv1 d1;
derv2 d2;
printf("%d %d %d",da.function1(),d1.function1(),d2.function1());o/p is
a)100,200,200;
b)200,100,200;
c)200,200,100;
d)none
struct {
int x;
int y;
}abc;you can not access x by the following
1)abc–>x;
2)abc[0]–>x;
abc.x;
(abc)–>x;