Question 3

(a) Write a C program to determine a given number is ‘odd’ or ‘even’ and print the following message NUMBER IS EVEN Or NUMBER IS ODD (i) Without using else option. (ii) With else option.

#include<stdio.h>
#include<conio.h>
main()
{
	int number;
	clrscr();
	printf("Enter Number : ");
	scanf("%d",&number);
	/* Without else option */
	switch(number%2)
	{
		case 0:
			printf("\nNUMBER IS EVEN");
			break;
		default:
			printf("\nNUMBER IS ODD");
			break;
	}
	/* With else option */
	if( (number%2) == 0)
		printf("\nNUMBER IS EVEN");
	else
		printf("\nNUMBER IS ODD");
	getch();
}

(b) Explain the break and continue statements using suitable example.

#include<stdio.h>
#include<conio.h>
main()
{
	int number,i,k=0;
	clrscr();
	printf("Enter Number : ");
	scanf("%d",&number);
	printf("Sum of first %d EVEN Numbers :",number);
	for(i=0;;i++)
	{
		if( (i%2) != 0)
			continue;
		k+=i;
		if(i == number)
			break;	
	}
	printf("%d",k);
	getch();
}

(c) Explain getchar() and gets() functions with suitable example.

#include <stdio.h>
void main(void)
{
   	int c;
   	char string[80];
   	clrscr();
   	while ((c = getchar()) != '\n')
     		printf("%c", c);
   	printf("\n\n\nInput a string:");
   	gets(string);
   	printf("\nThe string input was: %s\n", string);
   	getch();
}

(a) Write a C program to evaluate the square root for five numbers using the goto statement.

#include<stdio.h>
#include<conio.h>
#include<math.h>
main()
{
	int number,i=1;
	clrscr();
	START:
	printf("\n\nEnter Number : ");
	scanf("%d",&number);
	printf("\nRoot is : %f",sqrt(number));
	if(i != 5)
	{
		i++; goto START;
	}
	getch();
}

(b) Write the basic differences between the while loop and do-while loop with suitable example.

#include<stdio.h>
#include<conio.h>
main()
{
	int number=0;
	clrscr();
	do
	{
		printf("\nDo loop execute atleast one time whether condition is true or false.");
	}
	while(number != 0);
	while(number != 0)
	{
		printf("This statement doesn't execute..");
	}
	printf("\nWhile loop first check condition and then execute.");
	getch();
}

c) Explain putchar() and puts() functions with suitable example.

#include <stdio.h>
void main(void)
{
   	char i, j;
   	char string[] = "\n\n\nThis is an example output string by puts() functionn\n";
   	clrscr();
   	putchar('*');
   	for (i=0; i<10; i++)
      		putchar('_');
   	putchar('*');
   	putchar('\n');
   	puts(string);
   	getch();
}

Question 4

(a) Write a C program in which a 5 digit positive integer is entered through keyboard; write a function to calculate the sum of digits of the 5 digit number with using recursion.

#include<stdio.h>
#include<conio.h>
main()
{
	int number,i=1;
	clrscr();
	printf("Enter 5 digit Number : ");
	scanf("%d",&number);
	printf("%d",recursiveFunction(number));
	getch();
}
int recursiveFunction(int number)
{
	int reminder;
	reminder = number % 10;
	number = number / 10;
	if(number == 0)
	{
		return reminder;
	}
	else
	{
		return (reminder + recursiveFunction(number));
	}
}

Question 5

(b) What is friend function? Write simple C++ program which shows that friend function as a bridge between classes.

#include <iostream.h>
class friendClassA
{
		int X,Y;
	public:
		friend int addition(friendClassA fca);
		void set( int a, int b);
};
void friendClassA :: set( int a, int b)
{
	X = a;
	Y = b;
}
int addition(friendClassA fca)
{
	return fca.X + fca.Y;
}
main()
{
	friendClassA fca;
	fca.set(15,20);
	cout <<  "The Addition of X and Y is : "  << addition(fca);
}

Make Comments..!!

Rangeet Dutta

nice

Like · Comment ·

Vivek Rudani

super bbbb...