D:\COURSE\OOP\ppnt>java lineno < lineno.java
    1 //lineno.java  --- by tsaiwn@csie.nctu.edu.tw
    2 // javac lineno.java
    3 // java lineno < file.name
    4 // java lineno < file.name > file.txt
    5 import java.io.*;
    6 import java.util.*;
    7 class lineno {
    8     static PrintStream cout = System.out;
    9     static BufferedReader br = new BufferedReader(
   10                             new InputStreamReader(System.in) );
   11     public static void main(String xxx[ ]) throws Exception {
   12         String s;
   13         int n = 0;
   14         s = br.readLine( );
   15         while(s != null) {
   16         //while( ! br.eof() ) {    // C/C++ :  feof(stdin)
   17              ++n;
   18              cout.printf("%5d %s\r\n", n, s);  // for DOS/Windows
   19              s = br.readLine( );
   20          } // while
   21          cout.printf("\r\n");   // remove "\r" on Unix system
   22      } // main
   23 }
D:\COURSE\OOP\ppnt>javac lineno.java
D:\COURSE\OOP\ppnt>java lineno < yy.cpp
    1 //yy.cpp  -- see how compiler compile the program
    2 //gcc -S yy.cpp
    3 //more yy.s
    4 void bar(double a, short b, long c){ }
    5 void bar(double a, short b){short x[10]; x[0]=b;x[9]=(short)a;}
    6 void bar(double a){ }
    7 void bar(double *a){ }
    8 void bar(double &a){ }
    9 void bar(const double &a){ }
   10 int aaa = 8;
   11 int foo(int x, double y) {
   12     static double aaa = y;
   13     static short bbb=38;
   14     int c= ::aaa;
   15     bar(aaa, bbb, c);
   16 }
   17 int main( ) {
   18   foo(1,2);
   19 }
D:\COURSE\OOP\ppnt>g++ -c yy.cpp   // compile Only, 生出 yy.o (obj)

D:\COURSE\OOP\ppnt>nm yy.o      // nm 是 Unix 的基本指令 
00000000 b .bss           // Windows  在 Dec-C++ 的 bin 下有 nm.exe
00000000 d .data
00000000 r .rdata
00000000 t .text
         U ___main
         U __alloca
00000042 T __Z3bard        ;; 這是 6 void bar(double a){ }
00000010 T __Z3bards       ;; 這是 5 void bar(double a, short b){ ..
00000000 T __Z3bardsl  ;; 這是4 void bar(double a,short b,long c){ }
00000048 T __Z3barPd       ;; 這是 7 void bar(double *a){ }
0000004e T __Z3barRd       ;; 這是 8 void bar(double &a){ }
00000054 T __Z3barRKd      ;; 這是 9 void bar(const double &a){ }
0000005a T __Z3fooid       ;; 這是
00000000 b __ZGVZ3fooidE3aaa  ;; FLAG for static double aaa 設初值
00000000 D _aaa              ;; 這是 10 int aaa = 8;
000000a4 T _main             ;; 這是 17 int main( ) {
00000010 b _ZZ3fooidE3aaa    ;; 這是 12    static double aaa = y;
00000004 d _ZZ3fooidE3bbb    ;; 這是 13    static short bbb=38;

D:\COURSE\OOP\ppnt>