1. when should a pointer p be a reference parameter?
a. when fn. Changes p, & u want the change to affect actual pointer argument
b. when fn. Changes p, & u do not want the change to affect actual pointer argument
c. when fn. Changes *p, & u want the change to affect actual pointer argument
d. when fn. Changes *p, & u do not want the change to affect actual pointer argument
e. when pointer points to large object
2. output???
Int y=1;
Int k=2;
Int *p1;
Int *p2;
P1=&y;
P2=&k;
p1=p2;
*p1=3
*p2=4;
printf(“%d”,y);
a. 1
b. 2
c. 3
d. 4
3.when should u use a const reference paprameter ??
a. whenever the data type might be many bytes
b. whenever the data type might be many bytes, the fn. Changes the papramter within its body, & u do not want these changes to alter the actual argument
c. whenever the data type might be many bytes, the fn. Changes the papramter within its body, & u DO want these changes to alter the actual argument
d. whenevr the data type might be many bytes , & the function does not change the parameter within it body
4. A is a class & B is a new class derived from A
A a;
B b;
Bb1;
B b2;
4. what c++ syntax is used to declare that a class B is derived from Class A”
a. class A derives B {……};
b. class B: public A {,……..};
5. using the variable , which is legat?
a. a=b;
b. b=a;
c. b1=b2;
d. both a & b are legal but not c;
e. both a & c are legal but not b;
f. both b & c are legal , but not a;
6. suppose there ar e 2 fns. F has an argument of type A and g has an argument of type B. Which is correct?
a. both f(a) & g(a) are legal fn. Calls
b. f(a) is legal , but g(a) is not legal
c. f(a) is not legal , g(a) is legal
d. neither f(a) nor g(a) is legal fn call
7. template<class Item>
void foo(Item x);
which is right way to call with integer argument I?
a. foo(i);
b. foo<int > (i);
c. foo<Item>(i);
d. foo(<int> i);
e. foo(<Item > i);
8.
9. void quiz(int w)
{
if(w>1)
{ quiz (w/2);
quiz(w/2);
}
printf(“*”);
}
how many asterisks are printed by the function call quiz(5)?
a. 3
b. 4
c. 7
d. 8
10. void test_a (int n)
{
printf(“%d”,n);
if(n>0)
test_a(n-2);
}
test_a(4)?
a . 0 2 4
c. 0 2
d. 2 4
e. 4 2
f. 4 2 0
11. char string[8]=”abcdefg”;
*string=’\0’;
printf(“%s”,string);
a. compiler error
b. run-time error
c. no o/p, but no error
d. creates bcdefg
12. char string[8]=”abcdefg”
o/p :
printf(“%s\n”,string +3);
a. abcdefg
b. abc
c. defg
d. cdefg
13. main()
{ int I=-3, j=2,k=0,m;
m=++I&&++j||++k;
printf(“\n%d%d%D”, I,j,k,m);
a. –2 3 0 1
b. –2 3 1 1
c. –2 3 1 0
d. –2 3 0 0
14. main()
{
int I;
for(;;)
{
printf(“%d”,I++)
if(I>10)
break;
}
}
a. condition in a for-loop is mudt
b. no error
c. 2 ; shud be dropped
15.void goop ( int z[]);//prototype
int x[10];
which ois the correct way to call goop
a. goop(x);
b. goop(x[]);
c. goop(x[10]);
d. goop(&x);
e. goop(&x[]);
16. int a=3,b=17;
a=b%a;
b=++a+5;
printf(“a,b);
a. 2 8
b. 2 7
c. 3 7
d. 2 8
e. none
18. how many time shello will be printed?
FILE *fp=fopen(“test.txt”,w)
Fprintf(fp,”hello”);
Fork();
a. 1
b. 2
c. 0
d. none
19. int a;
int b=0;
while(a)
{
{ a&=a-1;
b++;
}
a &b
a. 0 & 15
b. 1 & 16
c. 0 & 16
d. none
20. class A
{
public:
static int a;
A() {a=10};
};
int main()
{
A b;
Printf(“%d”,b.a);
Return 0;
}
will the program compile?
a yes
b. no
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