1#include <stdio.h>2intsushu(inta)//用sushu(a)判断a是否为素数3{4inti;5intt=1;6for(i=2;i<a;i++)7if(a%i==0)8{9t=0;10break;11}12returnt;13}1415intmain()16{17intn,a,b;18scanf("%d",&n);19for(a=2;a<(n/2);a++)//找到一个数字a20{21b=n-a;22if(sushu(a)&&sushu(...