Question 2
(a) (ii) Explain the concept of Class and Object used in C++ giving suitable example.#include<iostream.h>
class students
{
public:
char *name;
int rollNo;
float cpi;
int sem;
}
main()
{
students s;
s.name = "Jaydip";
s.rollNo = 1;
s.cpi = 7.5;
s.sem = 7;
cout << "\nStudent Name : " << s.name;
cout << "\nStudent Roll No : " << s.rollNo;
cout << "\nStudent CPI : " << s.cpi;
cout << "\nStudent Semester : " << s.sem;
}
Question 3
(a) Write a program to generate fibbonacci series of numbers (total 20 numbers)i.e. 1, 1, 2, 3, 5, 8….etc
#include<stdio.h>
#include<conio.h>
void main()
{
int i,a=1,b=0,sum;
clrscr();
for(i=0;i<20;i++)
{
sum = a + b;
a = b;
b = sum;
printf("%d ",sum);
}
getch();
}
(c) Write a program to store 10 numbers in an array. Then find out Sum, Maximum and Average of these 10 numbers.
#include<stdio.h>
#include<conio.h>
main()
{
int number[10],sum=0,i,maximum = 0;
float average;
clrscr();
for(i=0;i<10;i++)
{
printf("Enter Number %d : ",i+1);
scanf("%d",&number[i]);
}
printf("\nSum of all Numbers : ");
for(i=0;i<10;i++)
{
sum += number[i];
}
printf("%d",sum);
printf("\nAverage of all Numbers : ");
average = sum/10;
printf("%f",average);
printf("\nMaximum Number is : ");
for(i=0;i<10;i++)
{
if(maximum < number[i])
maximum = number[i];
}
printf("%d",maximum);
getch();
}
(b) Write a program to convert temperature entered by user from Fahrenhit into Celcius.
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float t=0,z=0;
clrscr();
printf("\nEnter the tempreature = ");
scanf("%f",&t);
z=((t-32)*5)/9;
printf("\n Tempreature in calcius = %f",z);
getch();
}
(c) Write a C++ program which is having class named student .It has two member functions named “read_data()” and “print_data()”. It has member elements called Rollno,Name and Percentage. Assume suitable data type for variable. And read the data from the user and print the same on the screen using above functions.
#include<iostream.h>
class students
{
char *Name;
int RollNo;
float Percentage;
public :
void read_data(void)
{
cout << "\nEnter Name : ";
cin >> Name;
cout << "\nEnter Roll No : ";
cin >> RollNo;
cout << "\nEnter Percentage : ";
cin >> Percentage;
}
void print_data(void)
{
cout << "\n\n\nStudent Name : " << Name;
cout << "\nStudent Roll No : " << RollNo;
cout << "\nStudent Percentage : " << Percentage;
}
}
main()
{
students s;
s.read_data();
s.print_data();
}
Question 4
(a) Write a program to read two 5 X 5 matrices from the user and store the Addition of two matrices in the resultant matrix.i.e. C=A + B , where A,B,C each one is 5 X 5 Matrix.
#include<stdio.h>
#include<conio.h>
main()
{
int A[5][5],B[5][5],C[5][5],i,j;
clrscr();
printf("\n\n Enter First Matrix's Element : \n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
printf("\nA[%d][%d] = ",i,j);
scanf("%d",&A[i][j]);
}
}
printf("\n\n Enter Second Matrix's Element : \n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
printf("\nB[%d][%d] = ",i,j);
scanf("%d",&B[i][j]);
}
}
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
C[i][j] = A[i][j] + B[i][j];
}
}
printf("\n\n Sum of Two Matrix : \n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
printf("%d ",C[i][j]);
}
printf("\n");
}
getch();
}
(a) What is pointer? Give its benefits. Write a program to do swapping of two elements using function with two pointers as arguments.
#include<stdio.h>
#include<conio.h>
void swapNumbers(int *,int *);
main()
{
int x,y;
clrscr();
x = 10;
y = 20;
printf("Current value of X and Y is : %d and %d ",x,y);
swapNumbers(&x,&y);
printf("\n\nAfter swapping value of X and Y is : %d and %d ",x,y);
getch();
}
void swapNumbers(int *a,int *b)
{
int temp;
temp = *a;
*a = *b;
*b = temp;
}
Question 5
(a) Explain the syntax of switch…case statement. Write a program using switch…case statement.#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,choice;
clrscr();
printf("\nEnter Number 1 : ");
scanf("%d",&a);
printf("\nEnter Number 2 : ");
scanf("%d",&b);
printf("Enter Choice : ");
printf("\n1. Add");
printf("\n2. Subtract");
printf("\n3. Multiply");
printf("\n4. Divide\n\n\t : ");
scanf("%d",&choice);
switch(choice)
{
case 1 :
printf("Addition : %d",a+b);
break;
case 2 :
printf("Subtraction : %d",a-b);
break;
case 3 :
printf("Multiplication : %d",a*b);
break;
case 4 :
printf("Divided : %d",a/b);
break;
default :
printf("Your Choice is Wrong");
break;
}
getch();
}
(b) Write a program to print the following triangle for n lines
* *
* * *
* * * *
#include<stdio.h>
#include<conio.h>
main()
{
int number,i,j;
clrscr();
printf("\nEnter Number : ");
scanf("%d",&number);
printf("\n\n");
for(i=1;i<=number;i++)
{
for(j = (number-1);j>=i;j--)
printf(" ");
for(j=1;j<=i;j++)
printf("* ");
for(j = (number-1);j>=i;j--)
printf(" ");
printf("\n");
}
getch();
}
(b) Write a C Program to check whether the given number is prime or not.
#include<stdio.h>
#include<conio.h>
void main()
{
int number,stop=0,i;
clrscr();
printf("\nEnter Number : ");
scanf("%d",&number);
for(i=2;i<number;i++)
{
if( (number%i) == 0)
{
stop = 1;
break;
}
}
if(stop == 1 || number == 0 || number == 1)
printf("\nNumber is not prime.");
else
printf("\nNumber is prime.");
getch();
}
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