Briefly explain the following concept (10 )
a. Object Oriented Programming
b. Class
c. Inheritance
d. Data Encapsulation
e. Polymorphism

Indicate the header files required for the following library functions (5)
a. setw()
b. sqrt()
c. getch()
d. isnum()
e. strlen()

Write a function to multiply two 8x8 integer matrices. Matrices A[8][8], B[8][8] and C[8][8] will be passed to the function and the function should compute C = AxB. The prototype of the function is given below (5)

void Multiply(int A[8][8], int B[8][8], int c[8][8]);

Write a program to print the following output
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15

Write a program to check whether the string specified by the user is a palindrome. (5)

Write a function to find the first 50 prime numbers. The prototype of the function is given below.(7.5)

void PrintPrime(void);

Write a program to find the number of characters and words in a string inputted by the user. Assume that different words are separated by a single space. (5)

Point out the syntactic errors in the following functions

a. (5)

void PrintMe(int n)
{
     cout<<'Hello'<<"\n";
     char ch;
     for(int a = 0, a<10, a = a + 1)
     {
        cin<<ch;
        cout<<'ch'<<ch<<endl;
      }
}

b. (5)

void Rev(char st[])
{
    int len = strlen[st];
    for(int i = 0, i < len/2, i = i +1)
     {
        char temp = st(i);
        st(i) = st(len - 1 - i);
        st(len - 1 - i) = temp;
      }
        st(len) = 0;
        cout<<'done';
}

Write the output of the following programs.

a. (5)
#include<iostream.h>
#include<conio.h>
void main()
{
   int j = 1, k = 0;
   while(j <= 6)
   {
     while(k < j)
     {
       cout<<k++<<k++;
     }
       cout<<endl;
       j = j + 2;
   }
}

b. (7.5)
#include<iostream.h>
#include<conio.h>
void add(int&, int);
void eval(int[][4]);
void main()
{
   cout<<'H'<<"\n";
   int Arr[4][4];
   int j = 0;
   while(j < 4)
    {
        int k = 0;
        while(k < 4)
       {
         Arr[j][k] = k;
         k++;
       }
         j++;
    }
  eval(Arr);
}

void eval(int A[4][4])
{
    int j = 0, k;
    while(j<4)
   {
      int res = 0;
      k = 0;
      while(k<4)
       {
       add(res, A[j][k]);
       k ++;
        }
    cout<<res<<endl;
    j ++;
   }
}

void add(int &A, int B)
{
A = A + B;
}

Write a function to sort an array of 50 floating point numbers, A[50] by selection sort in increasing order. The prototype is given below. (5)

void Sort(float A[50]);

Write a function which returns the number of 'a's and 'A's in a string str. The function prototype is given below. (5)

int NumberOfA(char str[]);