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.

Comments

Popular posts from this blog

C Program to Check Even or Odd Without Modulous and Bitwise Operator

  C Program to Check Even or Odd Without Modulous and Bitwise Operator                   In this example we will check even or odd without Modulous Operator. To do this program we should know what is even and odd number.                   Even Number: Even numbers are those numbers which are divisible by 2. That means if we divide a number by 2 and if its remainder appears 0 then it is an even number.                                 For Example: 2,4,6,8,10,12,.... are all even numbers.                              ...

C Program to print the values of the diagonal elements of a square matrix and also find the sum of the values of the diagonal elements

C Program to print the values of the diagonal elements of a square matrix and also find the sum of the values of the diagonal elements.     In this example, we will accept the values of a square matrix and will print the diagonal elements of the of the square matrix, also the sum of the values of the diagonal elements will be printed.     Here, in the output we have taken a 3x3 square matrix.     PROGRAM #include <stdio.h> #include <conio.h> void   main () {      int   a [ 50 ][ 50 ], row , column , i , j , sum = 0 ;      printf ( "Enter the row size of the square matrix : " );      scanf ( " %d " ,& row );      column = row ;      printf ( "As this is a square matrix the row size and column size are equal." );  ...

C Program to Check a Whether a Number is Divisible by 5 or Not

 C Program to Check a Whether a Number is Divisible by 5 or Not            In this program we will check a number entered by the user will be divisible by 5 or Not. We have solved this problem using if-else statement. Program: #include <stdio.h> #include <conio.h> int  main() {      int  x;     printf( "Enter a number" );     scanf( "%d" ,&x);      if (x% 5 == 0 )         printf( "The number %d is divisible by 5" ,x);      else         printf( "The number %d is not divisible by 5" ,x);      return   0 ; } Output: NOTE:   You Can Comment Your Code if you have solved differently and we will pin it in the comment section.  Let's Learn toget...

C Program to check if a given square matrix is symmetric or not using function

 C Program to check if a given square matrix is symmetric or not using function.     In this example, we will check if a given square matrix entered by the user is symmetric or not. Here in the output we have taken a square matrix of 3x3. PROGRAM TO CHECK IF A GIVEN SQUARE MATRIX IS SYMMETRIC OR NOT USING FUNCTION #include <stdio.h> #include <conio.h> void  symmetric( int , int , int  [50][50]); void  main() {      int  row,column,i,j,a[50][50];     printf( "Enter the size of the matrices: " );     scanf( "%d" ,&row);     column=row;     printf( "Enter the matrix : " );      for (i=0;i<row;i++)     {          for (j=0;j<column;j++)         {    ...

C program to reverse a number entered by the user

 C program to reverse a number entered by the user     In this example, we will display the reverse of a number entered by the user. Here, in the output we have entered a number 472 whose reverse will be displayed in the screen. C PROGRAM TO REVERSE A NUMBER ENTERED BY THE USER: #include <stdio.h> #include <conio.h> void  main() {      int  x,y=0,r;     printf( "Enter a number : " );     scanf( "%d" ,&x);      while (x!=0)     {         r=x%10;         y=y*10+r;         x=x/10;     }     printf( "Reverse is : %d" ,y);     getch(); } OUTPUT TO REVERSE A NUMBER ENTERED BY THE USER:      Enter a number: 472      Revers...