How To write a C Program To Find Factorial, Triangular, Fibonacci Number in C Programming Language ?
Solution:
/*C Program To Find Factorial, Triangular, Fibonacci Number*/
#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
int fact(int);
int triangular(int);
int fibo (int);
void main()
{
int n,ch,i;
clrscr();
printf("Menu\n");
printf("\n1.Factorial /n2.Triangular Number\n3.Nth term Fibonacci number \n4.Exit");
printf("\nenter your choice:");
scanf("%d",&ch);
switch(ch)
{
case 1: printf("\nEnter the Number:");
scanf("%d",&n);
printf("factrial of %d=%d",n,fact(n));
break;
case 2: printf("\nEnter the Number:");
scanf("%d",&n);
printf("triangular number of%d=%d",n,triangular(n));
break;
case 3:printf("\nenter the ith term:");
scanf("%d",&i);
printf("the %dth term of fibbonaci series is%d ",i,fibo(i));
break;
case 4:exit(4);
break;
default:printf("invalid choice");
}
getch();
}
int fact (int x)
{
int p;
if (x==0)
return(1);
p=x*fact(x-1);
return(p);
}
int triangular(int x)
{
int p;
if (x==0||x==1)
return(x);
p=x+triangular(x-1);
return(p);
}
int fibo(int i)
{
int p;
if (i==0||i==1)
return(1);
p=fibo(i-1)+fibo(i-2);
return(p);
}
Tags: C program to find Factorial , Triangular , Fibonacci number, fibonacci series program in c
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