摘要：#include<stdio.h>double averange(double a,double b,double c){ return (a+b+c)/3;}double averange2(double a,double b,double c,double d,double e){ return 阅读全文

摘要：#include<stdio.h> int add(int x,int y){ return x+y; }int minus(int x,int y){ return x-y; }int multip(int x,int y){ return x*y; }int quotient(int x,int 阅读全文