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#include<iostream.h>
#include<iomanip.h>
int main(void)
{   char s1;
    int i,s[100][4],n,j,s2,s3,s4;
    float a[100];char ch[100];
 
     {   cout<<"班級人數?";
        cin>>n;
        }
 
    for (i=0;i<n;i++)
    {   cout<<"輸入三成績\n";
        cin>>s[i][0]>>s[i][1]>>s[i][2];
        }
 
    for  (i=0;i<n;i++)
    {
      s[i][3]=s[i][0]+s[i][1]+s[i][2];
      a[i]=s[i][3]/3.0;
 
      if (a[i]>=60)
         ch[i]='P';
      else
         ch[i]='F';
         }
     cout<<"  國文 英文 數學 加總   平均       "<<endl<<"==============================\n";
 
     for  (i=0;i<n;i++)
          cout<<setw(5)<<s[i][0]<<setw(5)<<s[i][1]<<setw(5)<<s[i][2]<<setw(5)<<s[i][3]
              <<setw(8)<<setprecision(2)<<a[i]<<"    "<<ch[i]<<endl<<endl;
 
    cout<<"==========================================\n";
    {
    s2=0,s3=0,s4=0
    for (i=0;i<n;i++)
    {s2=s2+s[i][0]
     s3=s3+s[i][1]
     s4=s4+s[i][2]
 
     s2=s2/n
     s3=s3/n
     s4=s4/n }
     cin>>s1;
     } 

prog.cpp:1:21: error: iostream.h: No such file or directory
prog.cpp:2:20: error: iomanip.h: No such file or directory
prog.cpp: In function ‘int main()’:
prog.cpp:8: error: ‘cout’ was not declared in this scope
prog.cpp:9: error: ‘cin’ was not declared in this scope
prog.cpp:13: error: ‘cout’ was not declared in this scope
prog.cpp:14: error: ‘cin’ was not declared in this scope
prog.cpp:27: error: ‘cout’ was not declared in this scope
prog.cpp:27: error: ‘endl’ was not declared in this scope
prog.cpp:30: error: ‘setw’ was not declared in this scope
prog.cpp:31: error: ‘setprecision’ was not declared in this scope
prog.cpp:36: error: expected `;' before ‘for’
prog.cpp:36: warning: statement has no effect
prog.cpp:36: error: expected `;' before ‘)’ token
prog.cpp:44: error: ‘cin’ was not declared in this scope
prog.cpp:5: warning: unused variable ‘j’
prog.cpp:45: error: expected `}' at end of input

Standard output is empty