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Computer and Communication Technology board papers

Students can also check the solved 2017 Computer and Communication Technology board papers for both region Delhi and ALL INDIA<br>https://www.zigya.com/blog/click-download-cbse-computer-communication-technology-solved-board-papers/

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Computer and Communication Technology board papers

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  1. CBSE Computer and Communication 2017 Board Questions www.zigya.com

  2. Computer and Communication Technology CBSE2017 ExamYear 2017 • Study, Assignments, Solved Previous Year Papers . Questions and Answers. FreeForever. • Short AnswerType • Write the type of C++tokens (keywords and user-defined identifiers) from the following : • For • delete • default • Value • Answer • Anil typed the following C++code and during compilation, he found four errors as follows: • Function strlen should have aprototype • Undefined symbolcout • Undefined symbolendl • Function getchar should have aprototype • On asking his teacher told him to include necessary header files in the code. Write the names of the header files, which Anil needs to include, forsuccessful • compilation and execution of the following code: • voidmain() • { • char S[] ="Hello"; • for(int i = 0; i<strlen(S); i++) S[i] =S[i]+1; • cout<<S<<end1; getchar(); • } • Answer • Rewrite the following C++code after removing any/all syntactical errors with each correction underlined. • Note:Assumeallrequiredheaderfilesarealreadybeingincludedintheprogram. • voidmain() • { • cout<<"Enter aninteger”; Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  3. Computer and Communication Technology CBSE2017 ExamYear 2017 Study, Assignments, Solved Previous Year Papers . Questions and Answers. FreeForever. cin>>N; switch(N%2) case 0 cout<<"Even"; Break; case 1 cout<<"Odd";Break; } Answer Find and write the output of the following C++program code : #define Big(A,B)(A>B)?A+1:B+2 voidmain() { char W[] = "Exam"; intL=strlen(W); for(int i=0; i<L-1;i++) W[i] =Big(W[i],W[i+1]); cout<<W<<endl; getch(); } Answer Find and write the output of the following C++ programcode: Note:Assumeallrequiredheaderfilesarealreadybeingincludedintheprogram. voidmain() { intA[]={10,12,15,17,20,30}; for(int i = 0; i<6;i++) { if(A[i]%2==0) A[i] /=2; elseif(A[i]%3==0) A[i] /=3; if(A[i]%5==0) A[i]/=5; } for(i = 0; i<6;i++) Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  4. Computer and Communication Technology CBSE2017 ExamYear 2017 • Study, Assignments, Solved Previous Year Papers . Questions and Answers. FreeForever. • cout<<A[i]<<"#"; • getch(); • } • Answer • Look at the following C++ code and find the possible output(s) from the options (i) to (iv) following it. Also, writethemaximumvaluesthatcanbeassignedtoeachofthevariablesRandC. • Note: • Assumealltherequiredheaderfilesarealreadybeingincludedinthecode. • The function random(n) generates an integer between 0 andn-1 • voidmain() • { • randomize(); • intR=random(3),C=random(4); • int MAT[3][3] ={{10,20,30},{20,30,40},{30,40,50}}; • for(int I=0; I<R;I++) • { • for(int J=0; J<C;J++) • cout<<MAT[I][J]<<""; • cout<<endl; • } • } (i) (ii) 10,20,3010,20,30 20,30,4020,30,40 30,40,50 (iii) (iv) 10,20 20,30 30,40 10,20 20,30 Answer 7. Differentiate between private and public members of a class in the context of ObjectOriented Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  5. Computer and Communication Technology CBSE2017 ExamYear 2017 • Study, Assignments, Solved Previous Year Papers . Questions and Answers. FreeForever. • Programming. Also, give a suitable example illustrating accessibility/non-accessibility of each using a class and an object inC++. • Answer • Observe the following C++ code and answer the questions (i) and (ii). Note: Assume all necessary files areincluded. • classEXAM • { • longCode; • char EName[20]; float Marks; public: • EXAM() //Member Function1 • { • Code=100;strcpy(EName,"Noname");Marks=0; • } • EXAM(EXAM &E) //Member Function2 • { • Code=E.Code+1; strcpy(EName,E.EName); Marks=E.Marks; • } • }; • voidmain() • { • ___________________ //Statement1 • ___________________ //Statement2 • } • Which Object-Oriented Programming feature is illustrated by the Member Function 1 and Member Function 2 together in the classEXAM? • WriteStatement1andStatement2toexecuteMemberFunction1andMemberFunction2respectively. • Answer Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  6. Computer and Communication Technology CBSE2017 ExamYear 2017 Study, Assignments, Solved Previous Year Papers . Questions and Answers. FreeForever. 9. Write the definition of a class RING in C++with the following description: • PrivateMembers • RingNumber • Radius • Area // data member of integertype // data member of floattype // data member of floattype • CalcArea() // Member function to calculate andassign • // Area as 3.14 *Radius*Radius • PublicMembers • GetArea() // A function to allow user to enter valuesof • // RingNumber and Radius. Also,this • // function should call CalcArea() tocalculate • //Area • - ShowArea() // A function to display RingNumber,Radius • // andArea • Answer • 10. Answer the questions (i) to(iv) based on the following: • classOne • { • int A1; protected: • floatA2; • public: • One(); • void Get1(); voidShow1(); • }; • class Two : privateOne • { • int B1; protected: • floatB2; • public: Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  7. Computer and Communication Technology CBSE2017 ExamYear 2017 Study, Assignments, Solved Previous Year Papers . Questions and Answers. FreeForever. Two(); void Get2(); voidShow(); }; class Three : publicTwo { intC1; public: Three(); void Get3(); voidShow(); }; voidmain() { Three T; _______; } //Statement1 //Statement2 Which type of Inheritance out of the following is illustrated in the aboveexample? -Single Level Inheritance, Multilevel Inheritance, MultipleInheritance. Write the names of all the member functions, which are directly accessible by the object T of class Three as declared in main()function. WriteStatement2tocallfunctionShow()ofclassTwofromtheobjectTofClassThree. What will be the order of execution of the constructors, when the object T of class Three is declared insidemain()? Answer 11. Write the definition of a function Reverse(int Arr[], int N) in C++, which should reverse the entire content of thearrayArrhavingNelements,withoutusinganyotherarray. Example: if the array Arrcontains Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  8. Computer and Communication Technology CBSE2017 ExamYear 2017 Study, Assignments, Solved Previous Year Papers . Questions and Answers. FreeForever. 131015205 Then the array shouldbecome 520151013 NOTE: Thefunctionshouldonlyrearrangethecontentofthearray. Thefunctionshouldnotcopythereversedcontentinanotherarray. The function should not display the content of the array. Answer Write a definition for a function ADDMIDROW(int MAT[][10], int R, int C) in C++, which finds sum of the middle row elements of the matrix MAT (Assuming C represents the number of Columns and R represents the number of rows, which is an oddinteger). Forexample,ifthecontentofarrayMAThavingRas3andCas5isasfollows: 12345 21345 34125 The function should calculate the sum and display the following: Sum of Middle Row:15 Answer T[25][30] is a two dimensional array, which is stored in the memory along the row with each of its element occupying 2 bytes, find the address of the element T[10][15], if the element T[5][10] is stored at the memory location25000. Answer Write the definition of a member function ADDMEM() for a class QUEUE in C++, to add a MEMBER in a dynamically allocated Queue of Members considering the following code is already written as a part of the program. structMember Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  9. Computer and Communication Technology CBSE2017 ExamYear 2017 Study, Assignments, Solved Previous Year Papers . Questions and Answers. FreeForever. { intMNO; charMNAME[20]; Member*Next; }; classQUEUE { Member*Rear,*Front; public: QUEUE(){Rear=NULL;Front=NULL;} void ADDMEM(); voidREMOVEMEM(); ~QUEUE(); }; Answer Convert the following Infix expression to its equivalent Postfix expression, showing the stack contents for each step ofconversion. P + ( Q - R ) * S /T Answer Aditi has used a text editing software to type some text. After saving the article as WORDS.TXT, she realisedthatshehaswronglytypedalphabetJinplaceofthealphabetIeverywhereinthearticle. Write a function definition for JTOI() in C++ that would display the corrected version of the entire content ofthefileWORDS.TXT withallthealphabets“J”tobedisplayedasanalphabet"I"onscreen. Note: Assuming that WORD.TXT does not contain any J alphabet otherwise. Example: If Aditi has stored the following content in the file WORDS.TXT: "WELL, THJS JS A WORD BY JTSELF. YOU COULD STRETCH THJS TO BE ASENTENCE" The function JTOI() should display the followingcontent: "WELL, THIS IS A WORD BY ITSELF. YOU COULD STRETCH THIS TO BE ASENTENCE" Answer Write a definition for function COUNTDEPT( ) in C++ to read each object of a binary file TEACHERS.DAT, find anddisplaythetotalnumberofteachersinthedepartmentMATHS.AssumethatthefileTEACHERS.DATis Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  10. Computer and Communication Technology CBSE2017 ExamYear 2017 Study, Assignments, Solved Previous Year Papers . Questions and Answers. FreeForever. createdwiththehelpofobjectsofclassTEACHERS,whichisdefinedbelow: classTEACHERS { int TID; charDEPT[20]; public: voidGET() { cin>>TID;gets(DEPT); } voidSHOW() { cout<<TID<<":"<<DEPT<<endl; } char *RDEPT(){returnDEPT;} }; Answer 18. Find the output of the following C++ code considering that the binary file BOOK.DAT exists on the hard disk with a data of 200books. classBOOK { int BID;charBName[20]; public: void Enter();voidDisplay(); }; voidmain() { fstream InFile; InFile.open("BOOK.DAT",ios::binary|ios::in); BOOKB; InFile.seekg(5*sizeof(B)); InFile.read((char*)&B,sizeof(B)); cout<<"Book Number:"<<InFile.tellg()/sizeof(B) +1; Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  11. Computer and Communication Technology CBSE2017 ExamYear 2017 Study, Assignments, Solved Previous Year Papers . Questions and Answers. FreeForever. InFile.seekg(0,ios::end); cout<<" of "<<InFile.tellg()/sizeof(B)<<endl; InFile.close(); } Answer Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

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