C++Institute CPA Practice Exam Questions

C++Institute CPA Sample Question Answers

Question # 1

What happens when you attempt to compile and run the following code?#include <iostream> using namespace std; int main() { int i=5; switch(i) { case 1: cout<<"Hello"; break; case 2: cout<<"world"; break; case 3: break; default: cout<<"End"; }  return 0; }

A. It prints: Hello 
B. It prints: world 
C. It prints: End 
D. It prints: Helloworld 

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Question # 2

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(2); cout << i; return 0; }

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

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Question # 3

What happens when you attempt to compile and run the following code?#include <iostream> #include <string> using namespace std; int main() { string s1[]= {"H" , "t" }; string s; for (int i=0; i<2; i++) { s = s1[i]; s.insert(1,"o"); cout << s; } return( 0 ); }

A. It prints: Hoto 
B. It prints: Ho 
C. It prints: to 
D. It prints: Ht 

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Question # 4

What is the output of the program?#include <iostream> #include <string>  using namespace std; class First { string name; public: First() { name = "Alan"; } void setName(string n) {this?>name = n;} void setName() {this?>name = "John";} void Print(){ cout << name; } }; int main() { First ob1,*ob2; ob2 = new First(); First *t; t = &ob1; t?>setName(); t?>Print(); t = ob2; t?>setName("Steve"); ob2?>Print(); }

A. It prints: JohnSteve 
B. It prints: AlanAlan 
C. It prints: AlanSteve 
D. It prints: Johnlan

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Question # 5

What happens when you attempt to compile and run the following code?#include <iostream> #include <string> using namespace std; class A { protected: int y; public: int x, z; A() : x(1), y(2), z(0) {} A(int a, int b) : x(a), y(b) { z = x * y;} void Print() { cout << z; } }; class B : public A { public: int y; B() : A() {} B(int a, int b) : A(a,b) {} void Print() { cout << z; } }; int main () { A b(2,5); b.Print(); return 0; }

A. It prints: 10 
B. It prints: 2 
C. It prints: 5 
D. It prints: 1 

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Question # 6

What happens when you attempt to compile and run the following code?#include <iostream> #include <string> using namespace std; class SampleClass { string *s; public: SampleClass() { s = new string("Text");} SampleClass(string s) { this?>s = new string(s);} ~SampleClass() { delete s;} void Print(){ cout<<*s;} }; int main() { SampleClass *obj; obj = new SampleClass("Test"); obj?>Print(); }

A. It prints: Text 
B. It prints: Test 
C. It prints: TextTest 
D. Garbage value. 

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Question # 7

What happens when you attempt to compile and run the following code?#include <iostream> using namespace std; int main (int argc, const char * argv[]) { int tab[5]={1,2,3}; for (int i=0; i<5; i++) cout <<tab[i]; return 0; }

A. compilation fails 
B. It prints: 12300 
C. It prints: 12345 
D. It prints: 00000 

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Question # 8

What happens when you attempt to compile and run the following code?#include <iostream> using namespace std; class First { public: void Print(){ cout<<"from First";} }; class Second:public First { public: void Print(){ cout<< "from Second";} };void fun(First *obj); int main() { First FirstObject; fun(&FirstObject); Second SecondObject; fun(&SecondObject); } void fun(First *obj) { obj?>Print(); }

A. It prints: from First 
B. It prints: from Firstfrom First 
C. It prints: from Firstfrom Second 
D. It prints: from Secondfrom Second 

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Question # 9

What will be the output of the program?#include <iostream> #include <string> using namespace std;  int fun(int); int main() { float k=3; k = fun(k); cout<<k; return 0; } int fun(int i) { i++; return i; }

A. 3 
B. 5 
C. 4 
D. 5 

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Question # 10

Which code, inserted at line 19, generates the output "23"?#include <iostream> #include <string> 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; }

A. cout << y << z
B. cout << y << A::z; 
C. cout << A::y << A::z; 
D. cout << B::y << B::z; 

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