vu mth718 Mid Term Subjective Solved Past Paper No.4

vu mth718 Topics in Numerical Methods Solved Past Papers

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Question 1: What is difference between Unary and binary operators and how they can be overloaded?

Answer:

Unary operator takes one argument. a++ is an example of unary operator
Binary take two operators +,-,* are example of binary operators
Overloaded binary operator may return any type
Here is general syntax of overloading
Return-type operator symbol (parameters);
Operator is keyword
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Question 2: What is difference between variable and pointer?

Answer:

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Question 3: Write a function BatsmanAvg which calculate the average of a player (Batsman), Call this function in main program (Function). Take the input of Total Runs made and Total number of matches played from the user in main function

Answer:

#include <iostream.h> // allows program to output data to the screen
// function main begins program execution
int BatsmanAvg(int TotalRuns, int TotalMatches) ;
main() {
int stopit;
int TotalRuns, TotalMatchesPlayed =0;
cout << "Please Entere the total Runs made : " ;
cin>> TotalRuns ;
cout << "Please Entere the total match played : " ;
cin>> TotalMatchesPlayed ;
cout << " Avg Runs = " << BatsmanAvg(TotalRuns,TotalMatchesPlayed);
cin>> stopit; //pause screen to show output
}
int BatsmanAvg(int TotalRuns, int TotalMatches) {
return TotalRuns/TotalMatches;
}

Question 4: Write a program that reads a number that says how many integer numbers to be stored in an array. Create an array to for the exact size of data and read in that many numbers into the array.

Answer:

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Question 5: Write a program using getline() member function to inputs a string up to delimiter character comma (,) and then display the string on the screen.

Answer:

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Question 6:

Write a program which consists of two classes, Date and Person.

Date class should contain three data members day, month, year and setter and getter function for these data members. Date class should also contain showdate() member function to display date.

Person class should contain three data members Name, Address, and Bday, where Name and Address are char pointer while Bday(Date of birth) is of type Date, Person class should further contain two member functions Display() and setdate().

In main program Create an object of Class person and call the member functions with it.

Answer:

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Question 7: Write a program which contains a class Account. The class should contains three data members Name, AcNo. and Balance. The class shouls further contains two constructors i.e. default constructor and parameterized constructor. Overload the stream insertion operator (<<) for this class.

Answer:

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Question 8: Write a program which contains a user defined function takes 3 integer arguments hours, minutes and seconds and returns the number of seconds.
ConvertInSeconds that Input variables hours, minutes and seconds in main program and call the function ConvertInSeconds and display the number of seconds returned by function.
Hint:
1 hour = 60 minutes
1 minute = 60 seconds

Answer:

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Question 9:

Write a program which defines five variables which store the salaries of five employees, using setw and setfill manipulators to display all these salaries in a column.

Note: Display all data with in a particular width and the empty space should be filled with character x

Output should be displayed as given below:

xxxxxx1000
xxxxxx1500
xxxxx20000
xxxxx30000
xxxxx60000

Answer:

#include <iostream.h>
#include <iomanip.h>
main(){
int sal1 =1000;
int sal2 =1500;
int sal3 =20000;
int sal4 =30000;
int sal5 =60000;
cout << setfill ('x') << setw (10);

Question 10: Write a program which defines three variables of type double which store three different values including decimal points, using setprecision manipulators to print all these values with different number of digits after the decimal number.

Answer:

#include
#include
main () {
double a = 12.12345;
double b = 13.123456;
double c = 14.1234567;
cout << setprecision (5) << a << endl;
cout << setprecision (2) << a << endl;
cout << setprecision (3) << a << endl;
}