输出1000之内的全部“完数”,要求每行输出五个,并统计完数的个数的...答:include "stdio.h"int main(int argc,char *argv[]){int n,m,k,i,s,t;for(s=k=0,n=4;n<1000;n++){for(m=1,t=n/2,i=2;i<=t;i++)if(n%i==0)m+=i;if(m==n){printf(++k%5 ? "%d " : "%d\n",n);s++;}}if(k%5)printf("\n");printf("A total of %d....