CBSE computer and communication technology
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Write the type of C++ tokens (keywords and user-defined identifiers) from the following :
(i) For
(ii) delete
(iii) default
(iv) Value
(i) For - user defined identifier
(ii) delete - keyword
(iii) default - keyword
(iv) Value - user defined identifier
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Anil typed the following C++ code and during compilation, he found four errors as follows:
(i) Function strlen should have a prototype
(ii) Undefined symbol cout
(iii) Undefined symbol endl
(iv) Function getchar should have a prototype
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, for successful
compilation and execution of the following code :
void main()
{
char S[] = 'Hello';
for(int i = 0; i<strlen(S); i++)
S[i] = S[i]+1;
cout<<S<<end1;
getchar();
}
In the given program header files are missing such as iostream.h, stdio.h and string.h.
Rewrite the following C++ code after removing any/all syntactical errors with each correction underlined.
Note: Assume all required header files are already being included in the program.
void main()
{
cout<<'Enter an integer”;
cin>>N;
switch(N%2)
case 0 cout<<'Even'; Break;
case 1 cout<<'Odd'; Break;
}
void main()
{
int N;
cout<<'Enter an integer';
cin>>N;
switch(N%2)
{
case 0 :
cout<<'Even'; break;
case 1 :
cout<<'Odd' ; break;
}
Each correction is bold and underlined.
Find and write the output of the following C++ program code :
#define Big(A,B) (A>B)?A+1:B+2
void main()
{
char W[] = 'Exam';
int L=strlen(W);
for(int i=0; i<L-1; i++)
W[i] = Big(W[i],W[i+1]);
cout<<W<<endl;
getch();
}
Output: zyom
Find and write the output of the following C++ program code:
Note: Assume all required header files are already being included in the program.
void main()
{
int A[]={10,12,15,17,20,30};
for(int i = 0; i<6; i++)
{
if(A[i]%2==0)
A[i] /= 2;
else if(A[i]%3==0)
A[i] /= 3;
if(A[i]%5==0)
A[i] /=5;
}
for(i = 0; i<6; i++)
cout<<A[i]<<'#';
getch();
}
Output: 1#6#1#17#2#3#
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