Computer Programming 1week Programs

Week l.

a)     Write a C program to find the sum of individual digits of a positive integer.

ALGORITHM:

Step1: start

Step2: Initialize k=1,sum=0

Step3: read n

Step4: Repeat step until n!=0

Step5: k=n%10

            sum=sum+k

            n=n/10

Step6: Dispaly sum

Step7:Stop.

     FLOWCHART:

PROGRAM:

#include<stdio.h>

#include<conio.h>

void main()

{

  int num, k=1, sum=0;

  clrscr();

  printf("Enter the number whose digits are to be added:");

  scanf("%d",&num);

while(num!=0)

{

  k=num%10;

  sum=sum+k;

  k=num/10;

  num=k;

}

printf("Sum of the digits:%d",sum);

getch();     }

OUTPUT:

Enter the digits whose digits are to be added : 1234

Sum of the Digits is : 10

b)     AIM: A Fibonacci Sequence is defined as follows: the first and second terms in the sequence are 0 and 1. Subsequent terms are found by adding the preceding two terms in the sequence. Write a C program to generate the first n terms of the sequence.

ALGORITHM:

Step1: start

Step2: read I,x,f,f1,f2

Step3: f=0,f1=1,f2=1

Step4: do

I++

F1=f2

F2=f

F=f1+f2

While (i<=n)

Step5: print f

Step6: stop

    

FLOWCHART:

PROGRAM:

void main()

{

int i,n,f,f1,f2;

printf("enter the range");

scanf("%d",&n);

f=0;

f1=1;

f2=1;

do

{

i++;

printf(“The Fibonacci Series is :”);

printf(" %d\n ",f);

f1=f2;

f2=f;

f=f1+f2;

}

while(i<=n);

}

OUTPUT:

Enter the range 9

The Fibonacci Series is :

0 1 1 2 3 5 8 13 21

c)     AIM: Write a C program to generate all the prime numbers between 1 and n, where n is a value supplied by the user.

ALGORITHM:

Step1: start

Step2: read n value

Step3: for i=1 i<=n

Step4:repeat a b c d e

a)factorial equal to 0

b) for i=1,j<=1 repeat c,d

c)if i percentage j equal to zero

d) fact equal to factorial added with one

e) if factorial equal to2print as prime number

step5: display the prime no till nth num

Step6: stop

FLOWCHART:

PROGRAM:

void main()

{

int n,i,fact,j;

printf("enter the range");

scanf("%d",&n);

printf(“Prime numbers are\n”);

for(i=1;i<=n;i++)

{

fact=0;

for(j=1;j<=n;j++)

{

if(i%j==0)

fact++;

if(f==2)

printf("%d  “,i);

}

getch();

}

 OUTPUT:

Enter the range 10

Prime numbers are

3  5  7