References Questions

• Which of the following statements is correct? We can return a global variable by reference. We cannot return a local variable by reference.
• Which of the following statements is correct? Once the variable and the reference are linked they are tied together. Once the reference of a variable is declared another reference of that variable is not allowed.
• Reference is like a _____.
• Which of the following statement is correct about the references?
• Which of the following statement is correct?
• Functions can be declared to return a reference type. There are reasons to make such a declaration/Which of the following reasons are correct? The information being returned is a large enough object that returning a reference is more efficient than returning a copy. The type of the function must be a R-value.
• Which of the following statement is correct?
• Which of the following statements is correct? An array of references is acceptable. We can also create a reference to a reference.
• Which of the following statement is correct?
• Which of the following statement is correct?
• Which of the following statement is correct?
• A reference is declared using the _____ symbol.
• Which of the following statements is correct? Once a reference variable has been defined to refer to a particular variable it can refer to any other variable. A reference is not a constant pointer.
• Which of the following statements is correct? A reference is not a constant pointer. A referenced is automatically de-referenced.
• Which of the following statement is correct?
• Which of the following statements is correct? Pointer to a reference and reference to a pointer both are valid. When we use reference, we are actually referring to a referent.
• Which of the following statements is correct? Change a reference changes the referent. We can create an array of references.
• Which of the following statement is correct about the program given below? #include<iostream.h> int CuriousTabFunction(int m) { m *= m; return((10)*(m /= m)); } int main() { int c = 9, *d = &c, e; int &z = e; e = CuriousTabFunction(c-- % 3? ++*d :(*d *= *d)); z = z + e / 10; cout<< c << " " << e; return 0; }
• What will be the output of the following program? #include <iostream.h> enum xyz { a, b, c }; int main() { int x = a, y = b, z = c; int &p = x, &q = y, &r = z; p = z; p = ++q; q = ++p; z = ++q + p++; cout<< p << " " << q << " " << z; return 0; }
• Which of the following statement is correct about the program given below? #include<iostream.h> int main() { int x = 10; int &y = x; x++; cout<< x << " " << y++; return 0; }