CBSE Computer Science Data File Handling Class XII

DATA FILE HANDLING OUTSIDE DELHI : 2008 4.a)Observe the program segment given below carefully, and answer the question that follows : class candidate { long Cid ; //Candidate’s Id char CName[20] ; //Candidate’s Name float Marks ; //Candidate’s Marks public ; void Enter( ) ; void Display( ) ; void MarksChange( ) ; //Function to change marks long R_Cid( ) {return Cid ;} } ; void MarksUpdate (long Id) { fstream File ; File.open (“CANDIDATE.DAT”, ios :: binary|ios::in|ios :: out) ; Candidate C ; int Record = 0, Found = 0 ; while (!Found&&File.read((char*)&C, sizeof(C))) { if (Id = =C.R_Cid( )) { cout << “Enter new Marks” ; C.MarksChange( ) ; File.seekp(File.tellp( )-sizeof(C)); //Statement 1 //File.seekp(Record*sizeof(C)); File.write((char*)&C,sizeof(C)); //Statement 2 //File.write((char*)&C,sizeof(Candidate)); Found = 1 ; } Record++ ; } if (Found = = 1) cout << “ Record Updated” ; File.close( ) ; } Write the Statement to position the File Pointer at the beginning of the Record for which the Candidate’s Id matches with the argument passed, and Statement 2 to write the updated Record at that position. 4.b)Write a function in C++ to count the number of uppercase alphabets present in a text file “ARTICLE.TXT”. Solution: void UpperLetters( ) { clrscr( ); ifstream fin("ARTICLE.TXT",ios::in); char ch; int uppercount=0; while(fin) { fin.get(ch); if(isupper(ch)) uppercount++; } cout<<"\nTotal number of Uppercase alphabets in the file = "<>DCODE>>DNAME>>DSIZE>>DPRICE;} void showdrinks( ) {cout<>size;gets(name);} void showdata(){cout<>ENO; gets(ENAME); } void SHOWIT( ) { cout< < ENO<