#include

#include

#include

usingnamespacestd;

structstudent{

intno;

stringname;

ints_m;

ints_cn;

ints_en;

intsum;

floatavg;

}stu[5];

intmain()

{

inti;

cout

ofstreamout("f3.txt");

if(!out){cout

cout

for(i=0;i

{

cin>>stu[i].no>>stu[i].name>>

stu[i].s_m>>stu[i].s_cn>>stu[i].s_en;

out

stu[i].s_m

}

cout

out.close();

cout

ifstreamin("f3.txt");

if(!in){cout

cout

for(i=0;i

{

in>>stu[i].no>>stu[i].name>>

stu[i].s_m>>stu[i].s_cn>>stu[i].s_en;

if(!in){cout

stu[i].sum=stu[i].s_m+stu[i].s_cn+stu[i].s_en;

stu[i].avg=stu[i].sum/3;

cout

stu[i].s_m

}

in.close();

}