如何讓它突破10位數(shù)限制呢
public class HelloWorld{
??? public static void main(String[] args){
??????? long num = 19999999999;
??????? int count = 1;
??????? while(true){
??????????? if(num/10 != 0){
??????????????? count = count + 1;
??????????????? num = num/10;
??????????? }else{
??????????????? System.out.println("它是個(gè)"+count+"位的數(shù)！");
??????????????? break;
??????????? }
??????? }
??? }
}
怎么讓它能突破10位數(shù)限制呢
這樣寫不太行，報(bào)int過(guò)長(zhǎng)
小白對(duì)這種地方不太了解，請(qǐng)大神指教
2020-08-26
int值最大取值范圍是2147483647。也就是0x7fffffff
所以需要轉(zhuǎn)為long類型才可以
public?class?HelloWorld{ ????public?static?void?main(String[]?args){ ????????long?num?=?99999999999l; ????????int?count?=?0; ????????if?(num?>=?0L??&&?num?<=?Long.MAX_VALUE){ ????????????while(num?!=?0l){ ????????????????count++; ????????????????num/=10; ????????????} ????????????System.out.println("它是個(gè)"+?count+"位的數(shù)！"); ????????}?else{ ????????????System.out.println("輸入有誤！"); ????????} ????} }