i_ptr, and l_ptr are all stored in the internal data can access any memory area. to generic pointers for variables in different memory areas. Copyright 2005-2019 Arm Limited (or its affiliates). Sgw/{PTSg{YOXl) iTed69z W sh#! D. All of the above. 4. This section focuses on the "Pointers" in C++ programming langauge. D. All of the above. K |O2SZj`30 byte is the memory type, the second is the high-order byte of the Pointers are special objects for holding (or pointing to) memory addresses. All rights reserved. wherever possible. Once declared, though, a pointer can usually be reassigned so that it points to an object of another type. 0F}qp'IF.q$ZDPizc)0+D&inVj [+\C Direct calling A. Non-constant pointer to non-constant data 8. Which of the following gives the [value] stored at the address pointed to by the pointer : ptr? Arms Privacy Policy has been updated. If type1 is a function and type2 isnt (or vice versa), pointer assignments are illegal. routines use these pointer types for this reason. Choose the right option? C?Hb1}}3_$n7y JuOIN %J'_-\H':MD This site uses cookies to store information on your computer. string* x, y; A. x is a pointer to a string, y is a string No explanation is available for this question! d0F3p~\pwxR_u} >0kedY~sp?S Although pointers contain numbers with most of the characteristics of unsigned integers, they have their own rules and restrictions for declarations, assignments, conversions, and arithmetic. 9. B. y is a pointer to a string, x is a string If type is any predefined or user-defined type, including void, the declaration. declares p to be of type pointer to type. Which of the following is the correct way to declare a pointer ? pointers may be used to access any variable regardless of its endobj 12 0 obj C. Both x and y are pointers to string types 3 0 obj In the above example listing, the generic pointers c_ptr, The pointers, however, are stored in xdata, A null pointer value is an address that is guaranteed to be different from any valid pointer in use in a program. Pointers to void are often called generic pointers, and are treated as pointers to char in the mikroC PRO for PIC32. example: These examples are pointers to variables that may be stored in any Assignments without proper casting between a pointer to type1 and a pointer to type2, where type1 and type2 are different types, can invoke a compiler warning or error. To reach the pointed object, we use an indirection operator (*) on a pointer. Function Pointers are pointers, i.e. What does the following statement mean? All Rights Reserved. Generic pointers are declared like standard C pointers. 1. GwDku2=ex9wH)G 6 0 obj A pointer of type pointer to object of type holds the address of (that is, points to) an object of type. <> The declaration. xZmo6n&ta%>4CNc4SY;$WV,+P9|wG0NrN8zCqd~? Explanation: A pointer can be initialized with null, zero and Address of an object of same type. Note Zero in which it is stored. By continuing to use our site, you consent to our cookies. By continuing to use our site, you consent to Arms Privacy Policy. example: Generic pointers are always stored using three bytes. endobj The first endobj © Copyright 2020. than the equivalent code generated for a memory-specific pointer If execution speed is a priority, you <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 1023.96 768] /Contents 12 0 R/Group<>/Tabs/S>> The examples in the next few sections illustrate these rules and restrictions. A. Null !~p&Avdg(GP <> C. Both A & B <> The code generated for a generic pointer executes more slowly B. For C. asm B. D. Function taking a char* argument and returning a pointer to int, Explanation: The statement means Pointer to function taking a char* argument and returns an int. A. auto A. int *ptr Which from the following is not a correct way to pass a pointer to a function? Assigning the integer constant 0 to a pointer assigns a null pointer value to it. However, you may specify the memory area in which endstream that the first value is the memory space followed by the high-order Private members of the class are accessi Run time polymorphism can be achieved wi To create an output stream, we must decl Catch handler can have multiple paramete Inline functions may not work ______ . Generic pointers can be declared with void. stream %PDF-1.5 11 0 obj e0N$sTYb,- endobj 8 0 obj Explanation: *ptr gives the [value] stored at the address pointed to by the pointer : ptr. <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 1023.96 768] /Contents 4 0 R/Group<>/Tabs/S>> 1 0 obj C. Pointer referencing 'x}(6W,. declares that vp is a generic pointer capable of being assigned to by any pointer to type value, including null, without complaint. A. 5. You can assign the void* pointer to the non-void* pointer refer to void for details. All rights reserved. a generic pointer is stored by using a memory type specifier. Since pointers are objects, you can have a pointer pointing to a pointer (and so on). Explanation: All of the above is not a correct way to pass a pointer to a function. In the mikroC PRO for PIC32, address of an object in memory can be obtained by means of an unary operator &. byte and low-order byte of the address. endobj © Copyright 2020. Which from the following is not a correc What does the following statement mean? All scoping, duration, and visibility rules are applied to the p object just declared. <> If type2 is a pointer to void, no cast is needed. Please review our Privacy Policy to learn more about our collection, use and transfers of your data. C. A constant pointer to non-constant data 2 0 obj stream Explanation: Referencing a value through a pointer is called Indirection. Explanation: int *ptr is the correct way to declare a pointer. endobj <> endobj 8. ^dvqi=wD[C17r)Gf/|DfsMwfr*-pH54RQ]SCrE6kfzwc The compiler A void pointer cannot point to which of these? <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 1023.96 768] /Contents 8 0 R/Group<>/Tabs/S>> Cookie Settings | Terms of Use | Privacy | Accessibility | Trademarks | Contact Us | Feedback. A pointer to a function is best thought of as an address, usually in a code segment, where that functions executable code is stored; that is, the address to which control is transferred when that function is called. <> D. None of the above. Pointers are declared the same as any other variable, but with * ahead of identifier. memory of the 8051. because the memory area is not known until run-time. generic pointers, a function can access data regardless of the memory B. Pointer to an array of chars % data, and idata respectively. C. Address of an object of same type All Rights Reserved. <> A pointer must be declared as pointing to some particular type, even if that type is void, which really means a pointer to anything. These Multiple Choice Questions (MCQ) should be practiced to improve the C++ programming skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations. D. none of the above, Explanation: * is to be grouped with the variables, not the data types. A type at the beginning of declaration specifies the type of a pointed object. offset, and the third is the low-order byte of the offset. Referencing a value through a pointer is called, A. int (*fp)(char*), A. Pointer to a pointer If type1 is a pointer to void, no cast is needed. 10. 10 0 obj B. should use memory-specific pointers instead of generic pointers 5 0 obj Methods in c++ <> 7. D. All of the above. The mikroC PRO for PIC32 lets you reassign pointers without typecasting, but the compiler will warn you unless the pointer was originally declared to be pointing to void. cannot optimize memory accesses and must generate generic code that Explanation: Size of any type of pointer is 2 byte. Which of the following are not a member What is meaning of following declaration What will happen in this code? 4 0 obj D. None of the above. 9 0 obj D. All of the above. variables, which point to the address of a function. By using these The pointer type pointer to void must not be confused with the null pointer. C. Pointer to function taking a char* argument and returns an int Other objects commonly pointed to include arrays, structures, and unions. B. void Generic xu endobj C. int &ptr Generic pointers can be declared with__________ . *n(p\x(M;>(Xj1iw79"0!sbwLoo,>W]2I'kq~ld2oFBE6^/dN]5|6"#q";q_$li-N=NiTX3hpv jb"{2SAz8d8{id%xI Rr 1Ryg;pna(@V=8hT{ E6;7(4-pYahg*N7!~_K9u7@R@B1 IId)e\MLk.5H25,4-H:B#1%^#tTL"fQIHa?WQ _Y-VO}'r"$@ !=$ bF;,FT*Oodr endstream Class member in c++ For location in 8051 memory space. Many of the Cx51 Compiler library The following code and assembly listing shows the values assigned B. int ptr memory area. x Category:Computer Science MCQs,Published by: T-Code Scripts. 7 0 obj A non-constant pointer to constant data Explanation: Generic pointers can be declared with void. endobj B. Indirection Copyright (c) 2002-2012 mikroElektronika. Explanation: Because the class member will have a definite type, So it cannot pointed by a void pointer. 2. )bs5Hq}KG_"e~>;K1 Zz N{TRMv"fV{^$? stream Choose the right option What does the following statement mean. @}-5{p97I!`a I{LJaa1i D;pVYcp@l C51: Locating Function Tables in Code Memory. You can view the declaration in this way: if *p is an object of type, then p has to be a pointer to such object (object of type). <> endobj endobj
generic pointers can be declared with