TO FIND FIBONACCI SERIES USING C PROGRAM

#include<stdio.h>
int main()
{
int n,r,ncr;
printf("Enter any two numbers-->");
scanf("%d",&n,&r);
ncr=fact(n)/(fact(r)*fact(n-r));
printf("The NCR factor of %d and %d is %d",n,r,ncr);
return 0;
}
int fact (int n)
{
int i=1;
while(n!=0)
{
i=i*n;
n--;
}
return i;
}

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BINARY TO DECIMAL CONVERSION

#include<stdio.h>
#include<stdio.h>  
#include<stdio.h>
void main()
{
int i=0,num,decimal=0;
long n;
printf("Enter the binary number:");
scanf("%d",&n);
while(n>0)
{ 
num=n%10;
decimal=decimal+num*pow(2,i);
n=n/10;
i=i+1;
}
printf("The decimal number is %d",decimal);
getch();
}







Algorithm:

1.Start.

2.Read the binary number,n

3.Calculate ai2n-1+ai2n-2+ai2n-3+..................+ai2

4.Print the decimal equivalent of the binary.

5.Stop.

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DECIMAL TO BINARY CONVERSION

#include<stdio.h>
#include<conio.h>
#include<math.h> 
void main()
{
int bin[10],i,j,N;
printf("Enter the decimal number:");
scanf("%d",&N);
i=0;
while(N>0)
{
bin[i]=N%2;
N=N/2;
i=i+1;
}
printf("The binary number is:");
for(j=i-1;j>=0;j--)
{
printf("%d",bin[j]);
}
getch();
}

Algorithm:

1.Start.

2.Read the decimal number.

3.Calculate the binary number using double-dabble method.

4.Print the binary equivalent of the decimal.

5.Stop.

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