计数一下,然后%5,判断下,满足五个就println换行
public static void main(String args[]){
int count =0;
for(int i=100;i<=200;i++) {
int j;
for(j=2;j<=i/2;j++) {
if(i%j==0)break;
}
if (j>i/2){
System.out.print(i+"\t");
count++;
if(count%5==0) System.out.println();
}
}
}
print改成println啊