Skip to main content

C Program to Check Whether a given Number is Prime or Not

 C Program to Check Whether a given Number is  Prime or Not


    In this example, we will check whether a given number is Prime or Not. To solve this problem we should know about Prime Numbers.


What is a Prime Number?

    Prime Numbers are those numbers which can only be divisible by 1 and the number itself.

        For Example: 2,3,5,7,etc are prime numbers, as these numbes are only divisible by 1 and the number itself. 


PROGRAM:

#include<stdio.h>
#include<conio.h>
int main()
{
    int x,i,count=0;
    printf("\nEnter the number : ");
    scanf("%d",&x);
    for(i=1;i<=x;i++)
    {
        if(x%i==0)
            count++;
    }
    if(count==2)
    {
        printf("\n%d is a Prime Number",x);
    }
    else
    {
        printf("\n%d is Not a Prime Number",x);
    }
}


OUTPUT:

 Enter the number : 5

 5 is a Prime Number



NOTE: You Can Comment Your Code if you have solved differently and we will pin it in the comment section.  Let's Learn together. 


MOTTO: 

You Learn, I Learn together We Learn.

Labels:

Comments

Post a Comment

Please do not spam any link

Popular posts from this blog

C program to Print the Digits of a Number in Words

 C program to Print the Digits of a Number in Words.      In this example, we will print the digits of a number in words.  For example, if a number 841 is entered through the keyboard  then the program must print “Eight Four One". For solving this first we have to reverse the number than by using switch statement we willl print the digits of the number in words.    PROGRAM TO PRINT THE DIGITS OF A NUMBER IN WORDS #include <stdio.h> #include <conio.h> void   main () {      int   n , num = 0 ;      printf ( "Enter the Number : " );      scanf ( " %d " ,& n );      while ( n != 0 )     {          num =( num * 10 )+( n % 10 );          n /= 10 ;     }      printf ( "Printing the...
Post a Comment
Read more

C Program to find out the roots of a Quadratic Equation and also test for Real and Complex roots

 C Program to find out the roots of a Quadratic Equation  and also test for Real and Complex roots.       In this example, we will calculate the roots of the quadratic equation by testing for real and complex roots. We can test real and complex roots by checking these conditions : If b 2  −4 ac  < 0, then there are no real roots. If b 2  −4 ac  = 0, then both the roots are equal. If b 2  −4 ac  > 0, then roots are real and distinct.   PROGRAM TO FIND OUT THE ROOTS OF A QUADRATIC EQUATION. #include <stdio.h> #include <conio.h> #include <math.h> int   main () {      int   a , b , c , d ;      float   x , y ;      printf ( "Enter coefficient of x^2,x and constant : " );      scanf ( " %d   %d   %d " ,& a ,& b ,& c );      d = b * b ...
Post a Comment
Read more

C Program to Generate and Print Fibonacci series upto a given inputted number

 C Program to Generate and Print Fibonacci series upto a given inputted number     In this example, we will generate and print fibonacci series upto a the upper limit entered by the user. To solve this problem we should have a proper concept on Fibonacci series and while loop.  What is a Fibonacci Series? Fibonacci series is the sum of the two preceding numbers, starting from 0 and 1.     For Example: 0,1,1,2,3,5,8,13,....,etc  PROGRAM #include <stdio.h> #include <conio.h> void   main () {      int   n , x1 , x2 , x3 = 0 ;      printf ( "Enter the limit upto which fibonacci series to be generated : " );      scanf ( " %d " ,& n );      x1 = 0 ;      x2 = 1 ;      printf ( " %d \t %d " , x1 , x2 );      x3 = x1 + x2 ;   ...
Post a Comment
Read more

C Program to Multiply two Matrices

 C Program to Multiply two Matrices.     In this example, we will calculate the product of the two matrices allowing the user to enter their required number of rows and columns. In matrix multiplication the number of columns, in the first matrix must be equal to the number of  rows in the second matrix, otherwise multiplication is not possible. The product will have the number of rows of the first matrix and the number of columns of the second matrix.     Here in the output we have taken two matrices of order 2x3 and 3x2. The resulting matrix after calculating the product will be of the order 2x2. PROGRAM #include <stdio.h> #include <conio.h> void   main () {      int   row1 , row2 , column1 , column2 , i , j , k ;      int   a [ 10 ][ 10 ], b [ 10 ][ 10 ], mul [ 10 ][ 10 ];      printf ( "Enter the row size of the 1st Matrix :...
Post a Comment
Read more

C Program to Generate Multiplication Table according to User Choice.

 C Program to Generate Multiplication Table according to User Choice.     In this program, we will learn how to print a multiplication table according to any positive number entered by the user. This program uses for loop to solve this problem.  C PROGRAM TO GENERATE MULTIPLICATION TABLE: # include < stdio.h > # include < conio.h > int   main () {      int   i , num , res = 0 ;      printf ( "\n Enter the multplication table you want :  " );      scanf ( " %d " ,& num );      printf ( "\n\n\n\t MULTIPLICATION TABLE OF  %d \t" , num );      printf ( "\n -------------------------------------------------- \n" );      for ( i = 1 ; i <= 10 ; i ++)      {          res = num * i ;       ...
Post a Comment
Read more