task : debug the prime number logic

#include <stdio.h>
#include <math.h>
void main(){
 
int x,n=0,i;
scanf("%d",&x);


for(i=0;i<(int)sqrt(x);i++){
    if(x%i==0){
    n=1;
    break;
    }
   
}



if(n==1) printf("not");
else printf("PRIME");

}




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