C语言新手求助：求表达式s=aa...aa-...-aaa-aa-a,fun函数我没怎么懂,#include long fun(int a,int n){\x05int j;\x05long s=0,t=0;\x05for(j=0;j

C语言新手求助：求表达式s=aa...aa-...-aaa-aa-a,fun函数我没怎么懂,#include long fun(int a,int n){\x05int j;\x05long s=0,t=0;\x05for(j=0;j
C语言新手求助：求表达式s=aa...aa-...-aaa-aa-a,fun函数我没怎么懂,
#include
long fun(int a,int n)
{
\x05int j;
\x05long s=0,t=0;
\x05for(j=0;j

C语言新手求助：求表达式s=aa...aa-...-aaa-aa-a,fun函数我没怎么懂,#include long fun(int a,int n){\x05int j;\x05long s=0,t=0;\x05for(j=0;j
#include
long fun(int a,int n)
{
int j;
long s=0,t=0;
for(j=0;j