素數距離問題

3 6 8 10樣例輸出
5 1 7 1 11 1
#include <stdio.h>#include <stdlib.h>#include <math.h>int main(){int n,i,j,ki,kj;scanf("%d",&n);  while(n--){  int x,count_i,count_j;  scanf("%d",&x);     if(x==1){        PRintf("2 1/n");        continue;     }     for(i=x,j=x;i>1&&j<2*x;i--,j++){         count_i=0;         count_j=0;         for(ki=sqrt(i);ki>0;ki--)            if(i%ki==0)  count_i++;         if(count_i==1){            printf("%d %d/n",i,abs(x-i));            break;         }         for(kj=sqrt(j);kj>0;kj--)            if(j%kj==0)  count_j++;         if(count_j==1){            printf("%d %d/n",j,abs(x-j));            break;         }     }  }return 0;}