Page 344 - C++
P. 344
CBSE AISSCE 2017-2018 Marking Scheme for Computer Science
(2018-2019 Sub Code: 083 Paper Code: 91)
Ans (i) fstream (ii) string
(½ Mark for writing each correct answer)
NOTE: Any other header file to be ignored
(c) Rewrite the following C++ code after removing any/all syntactical errors with 2
each correction underlined.
Note: Assume all required header files are already included in the program.
Typedef Count int;
void main()
{
Count C;
cout<<"Enter the count:";
cin>>C;
for (K = 1; K<=C; K++)
cout<< C "*" K <<endl;
}
Ans typedef int Count; //Error 1, Error 2
void main()
{
Count C;
int K; //OR Count K; //Error 3
cout<<"Enter the count:";
cin>>C;
for (K = 1; K<=C; K++)
//OR for (int K = 1; K<=C; K++) //Error 3
//OR for (Count K = 1; K<=C; K++) //Error 3
cout<< C << "*" << K <<endl; //Error 4
//OR cout<<C * K<<endl; //Error 4
}
(½ Mark for correcting each correct Error)
NOTE:
(1 Mark for only identifying all the errors correctly)
(d) Find and write the output of the following C++ program code: 3
Note: Assume all required header files are already included in the program.
void Revert(int &Num, int Last=2)
{
Last=(Last%2==0)?Last+1:Last-1;
for(int C=1; C<=Last; C++)
Num+=C;
}
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