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 display the upper triangle and lower triangle of the given square Matrix using function

 C program to display the upper triangle and lower triangle of the given square Matrix using function     In this example, we will display the upper triangle and lower triangle of a given square matrix using function. Here in the output section we have taken a 3x3 matrix whose values are entered as shown in the output. After entering the elements of the square matrix it will display the upper triangle and lower triangle of the matrix entered. PROGRAM TO DISPLAY THE UPPER TRIANGLE AND LOWER TRIANGLE OF THE GIVEN SQUARE MATRIX USING FUNCTION #include <stdio.h> #include <conio.h> void  uppert( int , int , int  [100][100]); void  lowert( int , int , int  [100][100]); void  main() {      int  i,j,c,d,a[100][100];     printf( "Enter the size of the given square matrix : " );     scanf( "%d" ,&c);     d=c; ...

C Program to Swap the values of two variables using function.

C Program to Swap the values of two variables using function.     In this example, we swap the values of two variables using function. We have declared a function swap. PROGRAM #include <stdio.h> #include <conio.h> void   swap ( int *, int  *); int   main () {      int   a , b ;      printf ( "Enter the values of a and b : " );      scanf ( " %d%d " ,& a ,& b );      printf ( "Before swapping the values in main a= %d  , b= %d \n " , a , b );      swap (& a ,& b );      printf ( "After swapping the values in main a= %d  , b= %d \n " , a , b );      getch (); } void   swap ( int  * a , int  * b ) {      int   temp ;    ...

C Program to find the sum of the elements of a 2-D array.

 C Program to find the sum of the elements of a 2-D array.     In this example, we will find the sum of the elements of a 2-D array allowing the user to enter the row size and column size according to their requiremnts.      Here in the output we have entered a row  size 3 and column size 3. PROGRAM #include <stdio.h> #include <conio.h> void   main () {      int   a [ 50 ][ 50 ], r , c , i , j , sum = 0 ;      printf ( "Enter the row size and column size of the array :" );      scanf ( " %d%d " ,& r ,& c );      printf ( "Enter the elements of the array : " );      for ( i = 0 ; i < r ; i ++)     {          for ( j = 0 ; j < c ; j ++)       ...

C program to calculate area of a circle using function.

C program to calculate area of a circle. In this example we will learn to calculate the area of a circle. Here in this program we will use 3.14 as the value of pi.  The formula to calculate the area of a circle is:                                                         area=   π  r² Flowchart To Calculate the Area of a Circle: PROGRAM: #include <conio.h> #include <stdio.h> int   main () {      float   radius , area ;      printf ( "Enter the radius of the circle : " );      scanf ( "%f" ,& radius );      area = 3.14 * radius * radius ;          printf ( "Area of the circle is : %.2f" , area );  ...

C program to read m x n matrix and calculate the Row sum and Column sum of the matrix.

 C program to read m x n matrix and calculate the Row sum and Column sum of the matrix.     In this example, we read a m x n matrix whose value would be entered by the user then the sum of row and column is calculated. Here in the example we have taken a matrix of order 3 x 2 whose row sum and column sum is displayed in the output screen. PROGRAM TO READ m x n MATRIX AND CALCULATE THE ROW SUM AND COLUMN SUM OF THE MATRIX: #include <stdio.h> #include <conio.h> void  main() {      int  i,j,m[100][100],row,column,rsum,csum=0;     printf( "Enter the row size of the matrix :" );     scanf( "%d" ,&row);     printf( "Enter the column size of the matrix :" );     scanf( "%d" ,&column);     printf( "Enter the Matrix : " );    ...