阅读程序,回答问题 1: public class Output1 { 2: public static void main(String arge[]) { 3: int i=0; 4: for ( char ch = 97; ch<113; ch++,i++) { 5: if( i % 8 == 0 ) 6: System.out.println(" "); 7: System.out.print("\t" +ch); 8: } 9: } 10: } (1)5、6行的if语句的功能是什么? (2)程序输出的结果有几行?