1.Write a function to calculate the factorial value of any integer entered through the keyboard.
#include<stdio.h>
#include<conio.h>
long fact(int n)
{
int i;
long f=1;
for (i=1;i<=n;i++)
f*=i;
}
void main()
{
int n,r;
clrscr();
aa:
printf("Please enter a value for n & r(r<=n)");
scanf("%d %d",&n,&r);
if(r>n)
{
printf("r is greter than n. ");
goto aa;
}
printf("\n %d! = %ld",n,fact(n));
printf("\n %dP%d = %ld",n,r,fact(n)/fact(n-r));
printf("\n %dC%d = %ld ",n,r,fact(n)/(fact(r)*fact(n-r)));
getch();
}
2.Write a function power (a,b) to calculate the value of a raised to b.
#include<stdio.h>
#include<conio.h>
#include<math.h>
double powr(int x,int y);
void main()
{
int n;
double x,result;
clrscr();
printf("Programme for calculation of 'x' to the power 'n' : ");
printf("\nEnter a value for x : ");
scanf("%lf",&x);
printf("\nEnter a intiger value for n : ");
scanf("%d",&n);
result = powr(x, n);
printf("\n%.2lf\ to the power %d is : %.3lf",x,n,result);
getch();
}
double powr(int x,int y)
{
double c;
c= pow(a,b);
return c;
}
3.Write a function to calculate LCM of two numbers
#include<stdio.h>
#include<conio.h>
int lcm(int x,int y);
int gcd(int p,int q);
void main()
{
int a,b;
clrscr();
scanf("%d%d",&a,&b);
printf("The lcm is %d",lcm(a,b));
getch();
}
int lcm(int x,int y)
{
int m,v;
m=gcd(x,y);
v=(x*y)/m;
return v;
}
int gcd(int p,int q)
{
int c;
do{
c=p%q;
p=q;
q=c;
}
while(c!=0);
return p;
}
4.Write a function to calculate GCD of two numbers.
#include<stdio.h>
#include<conio.h>
int gcd(int a,int b);
void main()
{
int a,b,c;
clrscr();
printf("Please enter two number for 'GCD' :");
scanf("%d%d",&a,&b);
c= gcd(a,b);
printf("GCD = %d.",c);
getch();
}
int gcd(int a,int b)
{
int c;
while(a!=0)
{
c=b%a;
b=a;
a=c;
}
return b;
}
5.Any year is entered through the keyboard. Write a function to determine whether the year is a leap year or not.
#include<stdio.h>
#include<conio.h>
int lyear(int year);
void main()
{
int year,c;
clrscr();
printf("Please enter a year to be tested : ");
scanf("%d", &year);
c=lyear(year);
getch();
}
int lyear(int year)
{
if((year%4==0 && year%100 !=0)|| year%400==0)
printf("\n%d is a leap year.",year);
else
printf("\n%d is not a leap year.",year);
return 0;
}
6.A prime integer is entered through the keyboard. Write a function to obtain the prime factors of this number. For example, prime factors of 24 are 2, 2, 2 and 3 whereas prime factor of 35 are 5 and 7
#include<stdio.h>
#include<conio.h>
int primf(int n);
void main()
{
int n,c;
clrscr();
printf("Prime factor : Enter a number :");
scanf("%d",&n);
c=primf(n);
getch();
}
int primf(int n)
{
int i;
for(i=2;n!=1;i++)
{
if((n%i)==0)
{
n=n/i;
printf("%3d",i);
i=1;
}
}
return 0;
}
7.Write a function which receives a float and an int from main (), finds the product of these two and returns the product which is printed through main().
#include<stdio.h>
#include<conio.h>
float prd(float x,int y);
void main()
{
float a,c;
int b;
clrscr();
printf("Please enter a float & a intger number : ");
scanf("%f%d",&a,&b);
c=prd(a,b);
printf("Product = %.3f",c);
getch();
}
float prd(float x,int y)
{
float d;
d =x*y;
return d;
}
8. Write a program which receives 5 integers and returns the sum, average and standard deviation of these numbers. Call this function from main() and print the results in main().
#include<stdio.h>
#include<conio.h>
#include<math.h>
int sum(int p,int q,int r,int s,int v);
float av1(int p,int q,int r,int s,int v);
double dv1(int p1,int q1,int r1,int s1,int v1);
float av;
void main()
{
int a,b,c,d,e,sum1;
long float dv;
clrscr();
printf("Enter five intger number :\n");
scanf("%d%d%d%d%d",&a,&b,&c,&d,&e);
sum1=sum(a,b,c,d,e);
av=av1(a,b,c,d,e);
dv=dv1(a,b,c,d,e);
printf("\n\nThe avarage is %.3f",av);
printf("\n\nThe sum is %d",sum1);
printf("\n\nThe dev is %.3lf",dv);
getch();
}
float av1(int p,int q,int r,int s,int v)
{
return (p+q+r+s+v)/5;
}
int sum(int p,int q,int r,int s,int v)
{
return (p+q+r+s+v);
}
double dv1(int p1,int q1,int r1,int s1,int v1)
{
double t,g;
t=pow((av-p1),2)+pow((av-q1),2)+pow((av-r1),2)+pow((av-s1),2)+pow((av-v1),2);
g=pow((t/5),.5);
return g;
}
9. A 5 digit positive integer is entered through the keyboard, write a function to calculate sum of digits of the 5 digit number.
(i) Using recursion
(ii) Without using recursion
Using recursion
#include<stdio.h>
#include<conio.h>
long int Sum(long int digits );
void main()
{
long int num,n,c;
clrscr();
printf("\nEnter 5 digits number : ");
scanf("%ld",&n);
c = Sum(n);
printf("%ld",c);
getch();
}
long int Sum(long int digits )
{
if(digits < 10)
return digits;
else
return digits%10 + Sum(digits/10);
}
Without using recursion
#include<stdio.h>
#include<conio.h>
void main()
{
long int n;
clrscr();
printf("\nEnter 5 digits number : ");
scanf("%ld",&n);
long int(long int n);
getch();
}
long int(long int n)
{
int rdgt;
long int num,sum = 0;
num = n;
do
{
rdgt = n%10;
n = n/10;
sum = (sum + rdgt);
}while(n !=0);
printf("\nSum of Digits of the number %ld is %ld ",num,sum);
return 0;
}
11. write a recursive function to obtain the first 25 numbers of a Fibonacci sequence. In a Fibonacci sequences the sum of two successive terms given the third term. Following are the first few term of the Fibonacci sequence:
1 1 2 3 5 8 13 21 34 55. . .
#include<stdio.h>
#include<conio.h>
long int fib(int m);
void main()
{
int i,n;
clrscr();
printf("First 25 Fibonacci sequence are :\n");
for(i=1;i<=25;i++)
{
printf("%ld\n",fib(i));
}
getch();
}
long int fib(int m)
{
if(m<=2)
return 1;
else
return fib(m-1)+fib(m-2);
}
9. A 5 digit positive integer is entered through the keyboard, write a function to calculate sum of digits of the 5 digit number.
(i) Using recursion
(ii) Without using recursion
Using recursion
#include<stdio.h>
#include<conio.h>
long int Sum(long int digits );
void main()
{
long int num,n,c;
clrscr();
printf("\nEnter 5 digits number : ");
scanf("%ld",&n);
c = Sum(n);
printf("%ld",c);
getch();
}
long int Sum(long int digits )
{
if(digits < 10)
return digits;
else
return digits%10 + Sum(digits/10);
}
Without using recursion
#include<stdio.h>
#include<conio.h>
void main()
{
long int n;
clrscr();
printf("\nEnter 5 digits number : ");
scanf("%ld",&n);
long int(long int n);
getch();
}
long int(long int n)
{
int rdgt;
long int num,sum = 0;
num = n;
do
{
rdgt = n%10;
n = n/10;
sum = (sum + rdgt);
}while(n !=0);
printf("\nSum of Digits of the number %ld is %ld ",num,sum);
return 0;
}
কোন মন্তব্য নেই:
একটি মন্তব্য পোস্ট করুন