public class a { public static void main(string[] args){ int age1=24; int age2=18; int age3=36; int age4=27; int sum; sum=age1+age2+age3+age4; double avg; avg=(age1+age2+age3+age4)/4; int minus; minus=age1-age2; int newage; 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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