CPA Exam - Free C++ Institute Questions and Answers

Question #11 (Topic: Topic 1)

What happens when you attempt to compile and run the following code?
#include <iostream>
#include <string>
using namespace std;
class complex{
double re, im;
public:
complex() : re(1),im(0.4) {}
complex operator+(complex &t);
void Print() { cout << re << " " << im; }
};
complex complex::operator+ (complex &t){
complex temp;
temp.re = this?>re + t.re;
temp.im = this?>im + t.im;
return temp;
}
int main(){
complex c1,c2,c3;
c3 = c1 + c2;
c3.Print();
}

A. It prints: 1 0.4 B. It prints: 2 0.8 C. It prints: 0 0 D. Garbage value

Answer: B

Question #12 (Topic: Topic 1)

What happens when you attempt to compile and run the following code?
#include <cstdlib>
#include <iostream>
using namespace std;
float* sum(float a,float b);
float* sum(float a,float b)
{
float *f = new float;
*f = a+b;
return f;
}
int main()
{
float a,b,*f;
a = 1.5; b = 3.4;
f = sum(a,b);
cout<<*f;
return 0;
}

A. It prints: 0 B. It prints: 4.9 C. It prints: 5 D. It prints: 4

Answer: B

Question #13 (Topic: Topic 1)

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";

A. #include<stdio.h> B. #include<stdlib.h> C. #include <iostream> D. #include<conio.h>

Answer: C

Question #14 (Topic: Topic 1)

What is the output of the program?
#include <iostream>
using namespace std;
int main()
{
int tab[4]={10,20,30,40};
tab[1]=10;
int *p;
p=&tab[0];
cout<<*p;
return 0;
}

A. It prints: 10 B. It prints: 20 C. It prints: 11 D. It prints: 30

Answer: A

Question #15 (Topic: Topic 1)

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int fun(int x) {
return 2*x;
}
int main(){
int i;
i = fun(1) & fun(0);
cout << i;
return 0;
}

A. It prints: 0 B. It prints: 1 C. It prints: -1 D. Compilation error

Answer: A

C++ Institute CPA - C++ Certified Associate Programmer Exam