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=("年龄总和："+sum);
System.out.println=("平均年龄:"+avg);
System.out.println("年龄差值:"+minus);
System.out.println("自减后的年龄:"+newAge);
}}
2015-08-10
//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("年龄总和："+sum);
System.out.println("平均年龄:"+avg);
System.out.println("年龄差值:"+minus);
System.out.println("自减后的年龄:"+newAge);
}}
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