正確的代碼
public?class?HelloWorld{
public?static?void?main(String[]?args){
int?age1=24;
int?age2=18;
int?age3=36;
int?age4=27;
int?sum=age1+age2+age3+age4;
double?avg=sum/4;
int?minus=age1-age2;
int?newAge=--age1;
System.out.println=("年齡總和："+sum);
System.out.println=("平均年齡:"+avg);
System.out.println("年齡差值:"+minus);
System.out.println("自減后的年齡:"+newAge);
}}
2015-12-15
//第11行和第12行，println后面不加”=“；
public?class?HelloWorld{
public?static?void?main(String[]?args){
int?age1=24;
int?age2=18;
int?age3=36;
int?age4=27;
int?sum=age1+age2+age3+age4;
double?avg=sum/4;
int?minus=age1-age2;
int?newAge=--age1;
System.out.println("年齡總和："+sum);
System.out.println("平均年齡:"+avg);
System.out.println("年齡差值:"+minus);
System.out.println("自減后的年齡:"+newAge);
}}