What happens when you attempt to compile and run the following code?
#include
using namespace std;
int op(int x, int y);
int main()
{
float *pf;
float f=0.9;
pf=&f;
cout << op(1, *pf);
return 0;
}
int op(int x, int y)
{
return x*y;
}
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Correct Answer:
A
Q: 2
What happens when you attempt to compile and run the following code?
#include
using namespace std;
void print(char *c);
int main (int argc, const char * argv[])
{
print("Test");
return 0;
}
void print(char *c)
{
cout<<c;
}
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Correct Answer:
A
Q: 3
What is the output of the program?
#include
using namespace std;
#define SQR(x)(x*x)
int main(int argc, char *argv[]) {
int x, y=2;
x = SQR(y);
cout << x << ", " <<y;
return 0;
}
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Correct Answer:
B
Q: 4
What happens when you attempt to compile and run the following code?
#include
using namespace std;
class First
{
public:
First() { cout << "Constructor";}
~First() { cout << "Destructor";}
void Print(){ cout<<"from First";}
};
int main()
{
First FirstObject;
FirstObject.Print();
}
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Correct Answer:
B
Q: 5
Which code, inserted at line 18, generates the output "AB"
#include
using namespace std;
class A
{
public:
void Print(){ cout<< "A";}
void Print2(){ cout<< "a";}
};
class B:public A
{
public:
void Print(){ cout<< "B";}
void Print2(){ cout<< "b";}
};
int main()
{
B ob2;
//insert code here
ob2.Print();
}
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Correct Answer:
D
Q: 6
Which statement should be added in the following program to make work it correctly?
using namespace std;
int main (int argc, const char * argv[])
{
cout<<"Hello";
}
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Correct Answer:
C
Q: 7
What happens when you attempt to compile and run the following code?
#include
using namespace std;
#include
using namespace std;
class First
{
public:
void Print(){ cout<<"from First";}
};
int main()
{
First t[2];
for (int i=0; i<2; i++)
t[i].Print();
}
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Correct Answer:
B
Q: 8
What happens when you attempt to compile and run the following code?
#include
using namespace std;
int main() {
float i = 1.0 / 2 * 2 / 1 * 2 / 4 * 4 / 2;
cout << i;
return 0;
}
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Correct Answer:
B
Q: 9
What happens when you attempt to compile and run the following code?
#include
using namespace std;
void fun(char*);
int main()
{
char t[4]={'0', '1', '2', '3'};
fun(&t[0]);
return 0;
}
void fun(char *a)
{
cout << *a;
}
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Correct Answer:
C
Q: 10
What happens when you attempt to compile and run the following code?
#include
using namespace std;
int fun(int x) {
return x<<2;
}
int main(){
int i;
i = fun(1) / 2;
cout << i;
return 0;
}
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Correct Answer:
C
Q: 11
What will happen when you attempt to compile and run the following code?
#include
#include
using namespace std;
int fun(int);
int main()
{
int *x = new int;
*x=10;
cout << fun(*x);
return 0;
}
int fun(int i)
{
return i*i;
}
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Correct Answer:
A
Q: 12
Which definitions are correct?
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Correct Answer:
A, C
Q: 13
What happens when you attempt to compile and run the following code?
#include
#include
using namespace std;
class A {
public:
A() { cout << "A0 ";}
A(string s) { cout << "A1";}
};
class B : public A {
public:
B() { cout << "B0 ";}
B(string s) { cout << "B1 ";}
};
class C : private B {
public:
C() { cout << "C0 ";}
C(string s) { cout << "C1 ";}
};
int main () {
B b1;
C c1;
return 0;
}
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Correct Answer:
C
Q: 14
What happens when you attempt to compile and run the following code?
#include
using namespace std;
int main()
{
long int x,y=10;
double d;
d = 3.99;
x=(int) d;
cout << x <<", ";
d=float (y);
cout << d;
return 0;
}
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Correct Answer:
A
Q: 15
What is the output of the program given below?
#include
using namespace std;
int main (int argc, const char * argv[])
{
enum state { ok, error, warning};
enum state s1, s2, s3, s4;
s1 = ok;
s2 = warning;
s3 = error;
s4 = ok;
cout << s1<< s2<< s3<< s4;
return 0;
}
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Correct Answer:
C
Q: 16
Which code, inserted at line 14, generates the output "3.14 10"?
#include
using namespace std;
namespace myNamespace1
{
int x = 5;
int y = 10;
}
namespace myNamespace2
{
float x = 3.14;
float y = 1.5;
}
int main () {
//insert code here
cout << x << " " << y;
return 0;
}
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Correct Answer:
D
Q: 17
What happens when you attempt to compile and run the following code?
#include
using namespace std;
int min(int a, int b);
int main()
{
int b=10;
b = min(5,20);
cout << b;
return 0;
}
int min(int a, int b)
{
if (a<b)
return(a);
else
return(b);
}
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Correct Answer:
C
Q: 18
What is the output of the program if characters 'h', 'e', 'l', 'l' , 'o' and enter are supplied as input?
#include
#include
using namespace std;
void f();
int main()
{
f();
return 0;
}
void f()
{
char c;
c = cin.get();
cout << c;
if(c != '\n')
f();
}
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Correct Answer:
A
Q: 19
Which code, inserted at line 19, generates the output "23"?
#include
#include
using namespace std;
class A {
int x;
protected:
int y;
public:
int z;
A() { x=1; y=2; z=3; }
};
class B : public A {
string z;
public:
int y;
void set() { y = 4; z = "John"; }
void Print() {
//insert code here
}
};
int main () {
B b;
b.set();
b.Print();
return 0;
}
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Correct Answer:
C
Q: 20
What happens when you attempt to compile and run the following code?
#include
using namespace std;
class BaseC
{
int *ptr;
public:
BaseC() { ptr = new int(10);}
BaseC(int i) { ptr = new int(i); }
~BaseC() { delete ptr; }
void Print() { cout <Print();
}
