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C++ Certified Associate Programmer Questions 11–15 (page: 4)

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();
}

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;
}

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";
}

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;
}

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;
}