Code for prime number in c++

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Code for prime number in c++

#include<iostream>

#include<iomanip>

int main(){

    int num,i,count;

 

    for(num = 1;num<=100;num++){

         count = 0;

         for(i=2;i<=num/2;i++){

             if(num%i==0){

                 count++;

                 break;

             }

        }

       

         if(count==0 && num!= 1)

             cout <<  num  << setw(3);

    }

 

   return 0;

}

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