CBSE Class 11 Computer Science Worksheet Set E Solved

1. Write the names of the header files to which the following functions belong:

i) strlen( )    ii) toupper( )

2. Differentiate between the formal parameters and actual parameters of a function. 

3. Write definition for a structure EMPREC that stores information about an employee such as empno, name, address and salary. The address member of EMPREC stores the information houseno, area and city.

4. How is call-by-value method of function invoking different from call-by-reference method?
Give appropriate examples supporting your answer.

5. What is the difference between #define and const? Explain with suitable example. 

6. Give the output of the following program:
#include
void Calculate (int &X, int Y=100)
{int TEMP = X + Y;
X += TEMP;
if(Y != 100)
cout<}
int main()
{
int A=40, B=50;
Calculate(B);
cout<Calculate (B);
cout<return 0;
}

7. Write a program using functions to count and display the number of vowels in a string.

Give the function name as Vowel( ). Accept the string in main( ) function and pass it to the Vowel( ) and display the result from the Vowel( ) function.

8. Write a program using functions to accept a number and check whether it is prime or not. The function name is Prime( ). Accept the number in Prime( ) function and display the result from main( ).

9. Define a structure customer with the following members : Idno, name, units and amount.
Write a C++ Program to read Idno, name and number of units consumed for n customers and compute amount as per the following criteria :

Units             Amount
1 - 100        200 baiza per unit
101 -300     400 baiza per unit
> 300         500 baiza per unit

For example , if the units consumed is 350, then
amount = 100*0.200 + 200*0.400 + 50*0.500
Display Idno, name, number of units and total amount for n customers.

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