PRIME NUMBER IN C LANGUAGE IS OR NOT

By lakahman malviya

   #include<conio.h>

 #include<iostream>

 #include<stdio.h>

 

 int main(){

     int n,m,flag=0;

     

printf("\n Enter the number to know is it prime or not ");

scanf("%d",&n);


m=n/2;

     if(n==0||n==1){

         printf("\nNot a prime number ");

         exit(0);

         

         

     }

     

     else{

         for(int i=2; i<=m;  i++){

             if(n%i==0){

                 printf("\n Not a prime number ");

                 flag=1;

                 break;

             }

         }

     }

      if(flag==0){

          printf("\n Number is prime ");

      }

     

     

     

     return 0; 

     

 }

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