instead of using loops.
#include<stdio.h>
main()
{
int a, fact;
printf("\nEnter any number: ");
scanf ("%d", &a);
fact=rec (a);
printf("\nFactorial Value = %d", fact);
}
rec (int x)
{
int f;
if (x==1)
return (1);
else
f=x*rec(x-1);
return (f);
}
Friday, February 23, 2007
C Program to Calculate Factorial of a number using Recursion
Write a program to calculate the factorial of a number. Use the concept of recursion
instead of using loops.
instead of using loops.
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68 comments:
hey man i am stuck with one of my project in which i have to write a program in c can u please help i will send u the specifications of my project once i get a response from you
i want to get triangular form of output.. for example if my input is world.. the output should be
w
wo
wor
worl
world
using single dimension array.. pls help me...
int main ()
{
int i=0,j;
char *p;
printf ("Enter String: ");
scanf ("%s", p);
for(i = 1; i <= strlen(p); i++)
{
for (j = 0; j < i; j++)
{
printf ("%c", *(p + j));
}
printf ("\n");
}
getch();
}
Hi,
I am learning C from book by Yashwant Kanetkar Let Us C. In that I am in chapter 9th Puppeting on screen where i was doing function strcat which was explained in book and in end its said by author that I leave it up to you for writing a function xstrcat to concenate two string. I am trying to solve it but i am not able to can you please help me with that?
what is the meaning of rec in c programming
the program has not run may be there some errors
yes vivek may i help u if possible for me den reply at my mail kriticaagarwal@gmail.com
Thank you sir for your program...
I m doing my first year BE .
This program helps me to write a record.
Very very thank you sir/madam....
Thank you sir for your program...
I m doing my first year BE .
This program helps me to write a record.
Very very thank you sir/madam....
I'm a beginner for C and i really stuck with this. can any one help me to create a c program for the following out put.
1!=1
2!=2
3!=6
...........
........
........ up to
10!=362880
and also need to know about a coding for same kind of out put ,but user enter the integer.
please i need ur help
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how to find factorial of a number(from 1 to 10) without using,
>loop statements like for, while, do while.
>conditional operators like if, case.
>just you can use the below
arithmetic operators like + , - , * , % , /, ++, --.??!!
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Can you write the factorial number calculateprogram in C# too?
does curly braces effect anymore while using if statment in for loop
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hi i want a factorial of anumber using without recursion
It's really informative about for factorial. www.cprogrammings.com also provide c programming tutorials.
c++ program for factorial using for loop??
I am new for programming language, But After I learnt factorial program through your post.Really , very nice..Because i understood easily compare to other posts..thank you
Cegonsoft
factorial using while :
#include
int main()
{
int num = 0, val = 0, fact = 0;
printf("Enter a non-negative number \n");
scanf("%d", &num);
fact = num;
val = num;
if (num == 0 || num == 1)
{
printf("%d! is 1 \n", num);
}
else
{
while (num > 2)
{
fact = fact * --num;
}
printf("%d! is %d \n", val, fact);
}
return 0;
}
Here is the program:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Factoriel
{
class Program
{
static void Main(string[] args)
{
myLabel:
int val1, val2;
double factoriel = 1;
Console.Write("Enter an integer: ");
val1 = Convert.ToInt32(Console.ReadLine());
Console.WriteLine();
val2 = val1;
if (val1 < 0)
{
Console.WriteLine("The entered value is not valid! \nPlease enter a value greater than zero.");
Console.WriteLine();
goto myLabel;
}
if (val1 == 0 || val1 == 1)
{
Console.WriteLine("{0}! = 1", val1);
Console.WriteLine();
goto myLabel;
}
if (val1 > 1)
{
while (val2 > 1)
{
factoriel = factoriel * val2;
val2 = val2 - 1;
}
Console.WriteLine("{0}!= {1} ", val1, factoriel);
Console.WriteLine();
goto myLabel;
}
}
}
}
#include
#include
void main(){
int a,b,c,ch=0;
printf("CALCULATOR\n");
printf("PRESS 1 for ADDITION\n");
printf("PRESS 2 for SUBTRACTION\n");
printf("PRESS 3 for MULTIPLICATION\n");
printf("PRESS 4 for DIVSION\n");
printf("PRESS 5 for MODULO\n");
printf("PRESS 6 for LEAP YEAR FINDER\n");
printf("PRESS 7 for REVERSE A NUMBER\n");
printf("PRESS 8 for GRADE FINDER\n");
printf("PRESS 9 for INR to USD\n");
printf("PRESS 10 for INR to EUR\n");
printf("PRESS 11 for INR to GBP\n");
printf("PRESS 12 for INR to AUD\n");
printf("PRESS 13 for INR to Dirham\n");
printf("PRESS 14 for INR to Yuan\n");
printf("PRESS 15 for INR to Canadian Dollar\n");
scanf("%d",&ch);
//choice
switch(ch){
case 1:
printf("ADDITION\nPlease enter the first value");
scanf("%d", &a);
printf("Please enter the second value");
scanf("%d",&b);
c=a+b;
printf("The answer is %d",c);
break;
case 2:
printf("SUBTRACTION\nPlease enter the first value");
scanf("%d", &a);
printf("Please enter the second value");
scanf("%d",&b);
c=a-b;
printf("The answer is %d",c);
break;
case 3:
printf("MULTIPLICATION\nPlease enter the first value");
scanf("%d", &a);
printf("Please enter the second value");
scanf("%d",&b);
c=a*b;
printf("The answer is %d",c);
break;
case 5:
printf("MODULO\nPlease enter the first value");
scanf("%d", &a);
printf("Please enter the second value");
scanf("%d",&b);
c=a%b;
printf("The answer is %d",c);
case 6:
printf("LEAP YEAR FINDER\nPlease Enter the YEAR\n");
scanf("%d",&a);
if(a%4==0){printf("It is a LEAP YEAR");}
else{printf("It is not a LEAP YEAR");}
break;
case 7:
printf("REVERSE A NUMBER\nPlease Enter a 3 integer number\n");
scanf("%d",&a);
b=a%10;
c=a/10%10;
d=a/100%10;
printf("%d%d%d",b,c,d);
break;
case 8:
printf("STUDENT GRADE FINDER\nPlease Enter the Marks\n");
scanf("%d",&a);
if(a>=0 && a<=50){printf("FAIL");}
else if(a>=51 && a<=60){printf("C GRADE");}
else if(a>=61 && a<=70){printf("B GRADE");}
else if(a>=71 && a<=100){printf("A GRADE");}
else if(a>=101 || a<=-1){printf("INVALID NUMBER");}
break;
case 9:
printf("INR to USD\nWrite the amount of money");
scanf("%d", &a);
9
}
}
what do you meant by the command RETURN(1);
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I need process with Look.. :)
Is the process with for Loop is correct in comment??
the triangle program given in comment is not proper.correct it.
visit :C program to find the factorial of a number using recursion
i am new to programming can any body help me in creating such arrangement using loop
*****
****
***
**
*
can any body helps me make such programe using loop
*****
&****
&&***
&&&**
&&&&*
hi...can anyone help me to write a c program to perform matrix multiplication??
Multiplication of matrix:
#include
main()
{
int i,j,k,l;
int matrix[3][3],matri[3][3],matr[3][3];
printf("Enter 1st matrix: \n");
for (i=0;i<3;++i)
{
printf("\nEnter #%d row: ",(i+1));
for (j=0;j<3;++j)
scanf("%d",&matrix[i][j]);
}
printf("\n\n");
printf("Enter 2nd matrix: \n");
for (i=0;i<3;++i)
{
printf("\nEnter #%d row: ",(i+1));
for (j=0;j<3;++j)
scanf("%d",&matri[i][j]);
}
/*printf("\n\n");
/for (i=0;i<3;++i)
/{
/for (j=0;j<3;++j)
}*/
matr[i][j]={{0,0,0},{0,0,0},{0,0,0}}
for (j=0;j<3;++j)
{
for (i=0;i<3;++i)
{
for (l=0;l<3;++l)
matr[i][j] = matr[i][j] + (matrix[i][l])*(matri[l][j]);
}
}
printf("The resultant matrix is:\n\n");
for (i=0;i<3;++i)
{
for (j=0;j<3;++j)
printf("%4d",matr[i][j]);
printf("\n\n");
}
}
/*Factorial of a number by using loops*/
#include
#include
void main ()
{
int i , n , fac=1;
printf ("Enter n to get the factorial");
scanf("%d",&n);
for (i=1;i<=n;i++)
{
fac=fac*i ;
}
printf (" Factorial=%d",fac);
getch();
}
PLEASE.ı need a programm that say:
Nıs ther postıve number between 1 and 20.then write c# programm to calculate factorial of as follow
1!=1
2!=2
n!=........
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#include
int main(){
int i,f=1,num;
printf("Enter a number: ");
scanf("%d",&num);
for(i=1;i<=num;i++)
f=f*i;
printf("Factorial of %d is: %d",num,f);
return 0;
}
1. Factorial series in c
#include
int main(){
long f=1;
int i,num,min,max;
printf("Enter the minimum range: ");
scanf("%d",&min);
printf("Enter the maximum range: ");
scanf("%d",&max);
printf("Factorial series in given range: ");
for(num=min;num<=max;num++){
f=1;
for(i=1;i<=num;i++)
f=f*i;
printf("%ld ",f);
}
return 0;
}
Sample output:
Enter the minimum range: 1
Enter the maximum range: 10
Factorial series in given range: 1 2 6 24 120 720 5040 40320 362880 3628800
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Actually , the given program will not run as far as I could understand , for a simple reason that, they have not made a global declaration for the function definition they have used , i.e rec (int x) . So, if we include the same , we can get to a potential answer that will be correct . You can please try this out if you find error which possibly will come during compilation . Sample code for global declaration will be :
#include
#include
rec ( int a) ;
void main()
:
:
:
getch()
}
rec (int x)
{
:
:
:
}
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