What is the output of the following C++ code? #include using namespace std; int main() { int a = 10; int b = 20; int c = a + b; cout

Question

Consider class A, which defines a zero argument constructor and a one argument constructor which accepts an integer parameter.
 
Also class B is defined as
```cpp
class B
{
        	public:
     	  
     	   explicit B(int)
         	{
     	   }
};
 
int main(int argc, char **argv)
{

Line number 1
A a1 = 77;
 
Line number 2
A a2;
 
Line number 3
A a3 = a1;
 
Line number 4
B b1 = 77;
 
Line number5
B b2(77);
 
return 0;
}
```

Accepted Answer

Line number 4 will cause compile time error

Answer

Line number 3 will cause compile time error

Answer

Line number 5 will cause run time error

Answer

Line number 5 will cause compile time error

Question from the C++ test

What is the output of the following C++ code? #include <iostream> using namespace std; int main() { int a = 10; int b = 20; int c = a + b; cout << c; return 0; }