C++ Programming · all questions

Exception Handling in C++
practice.

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68

Questions

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Q61

What is Re-throwing an exception means in C++?

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Q62

What will be the output of the following C++ code?

#include <iostream>
#include <string>
#include <cstdlib>
using namespace std;
void func(int a, int b)
{
    if(b < 1){
    	throw b;
    }
    else{
    	cout<<"Product of "<<a<<" and  "<<b<<" is: "<<a*b<<endl;
    }
}
 
int main()
{
    try
    {
    	try
            {			
        	    func(5,-1);
	    }
	   catch(int b)
            {
		if(b==0)
			throw "value of b is zero\n";
		else
			throw "value of b is less than zero\n";
	}
    }
    catch(const char* e)
    {
	cout<<e;
    }
}

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Q63

What id the syntax for catching any type of exceptions?

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Q64

What will be the output of the following C++ code?

#include <iostream>
#include <string>
#include <cstdlib>
using namespace std;
class A
{
	int a;
    public:
	A(){}
};
class B: public A
{
	int b;
    public:
	B(){}
};
 
void func()
{
	B b;
	throw b;
}
int main()
{
	try{
		func();
	}
	catch(B *b){
		cout<<"Caught B Class\n";
	}
	catch(A a){
		cout<<"Caught A Class\n";
	}
}

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Q65

Which of the following is an exception in C++?

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Q66

What will be the output of the following C++ code?

#include <iostream>
#include <string>
#include <cstdlib>
using namespace std;
class A
{
	int a;
    public:
	A(){}
};
 
class B: public A
{
	int b;
    public:
	B(){}
};
 
void func()
{
	B b;
	throw b;
}
 
int main()
{
	try{
		func();
	}
	catch(A a){
		cout<<"Caught A Class\n";
	}
	catch(B b){
		cout<<"Caught B Class\n";
	}
}

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Q67

What happens when this C++ program is compiled?

#include <iostream>
#include <string>
#include <cstdlib>
using namespace std;
class A
{
	int a;
    public:
	A(){}
};
 
class B: public A
{
	int b;
    public:
	B(){}
};
 
void func()
{
	B b;
	throw b;
}
 
int main()
{
	try{
		func();
	}
	catch(A a){
		cout<<"Caught A Class\n";
	}
	catch(B b){
		cout<<"Caught B Class\n";
	}
}

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Q68

What is the difference between error and exception?

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