#!/bin/sh
# This is a shar archive.
# The rest of this file is a shell script which will extract:
#
# 2_11a.c 2_11a.cmp 2_11a1.c 2_11atst.c 2_11b.c 2_11b.cmp 2_11b1.c 2_11btst.c makefile
#
# To extract the files from this shell archive file simply
# create a directory for this file, move the archive file
# to it and enter the command
#
#	sh filename
# 
# The files will be extracted automatically.
# Note: Do not use csh.
#
# Archive created: Mon Jul 30 22:55:18 EDT 1990
#
echo x - 2_11a.c
sed 's/^X//' > 2_11a.c << '!EOF!'
/* Copyright (c) 1990 by AT&T Bell Telephone Laboratories, Incorporated. */
/* The C++ Answer Book */
/* Tony Hansen */
/* All rights reserved. */
// swap two integers
// version 1
void swapints(int *a, int *b)
{
    int t = *a;
    *a = *b;
    *b = t;
}
!EOF!
ls -l 2_11a.c
echo x - 2_11a.cmp
sed 's/^X//' > 2_11a.cmp << '!EOF!'
a = 1, b = 2
a = 2, b = 1
a = 1, b = 1
a = 1, b = 1
a = 0, b = 1
a = 1, b = 0
!EOF!
ls -l 2_11a.cmp
echo x - 2_11a1.c
sed 's/^X//' > 2_11a1.c << '!EOF!'
/* Copyright (c) 1990 by AT&T Bell Telephone Laboratories, Incorporated. */
/* The C++ Answer Book */
/* Tony Hansen */
/* All rights reserved. */
swapints(&s, &t);
!EOF!
ls -l 2_11a1.c
echo x - 2_11atst.c
sed 's/^X//' > 2_11atst.c << '!EOF!'
/* Copyright (c) 1990 by AT&T Bell Telephone Laboratories, Incorporated. */
/* The C++ Answer Book */
/* Tony Hansen */
/* All rights reserved. */
#include <stream.h>
#include "2_11a.c"

main()
{
    int a = 1, b = 2;
    cout << "a = " << a << ", b = " << b << "\n";
    swapints(&a, &b);
    cout << "a = " << a << ", b = " << b << "\n";
    a = 1, b = 1;
    cout << "a = " << a << ", b = " << b << "\n";
    swapints(&a, &b);
    cout << "a = " << a << ", b = " << b << "\n";
    a = 0, b = 1;
    cout << "a = " << a << ", b = " << b << "\n";
    swapints(&a, &b);
    cout << "a = " << a << ", b = " << b << "\n";
    return 0;
}
!EOF!
ls -l 2_11atst.c
echo x - 2_11b.c
sed 's/^X//' > 2_11b.c << '!EOF!'
/* Copyright (c) 1990 by AT&T Bell Telephone Laboratories, Incorporated. */
/* The C++ Answer Book */
/* Tony Hansen */
/* All rights reserved. */
// swap two integers
// version 2
void swapints(int &a, int &b)
{
    int t = a;
    a = b;
    b = t;
}
!EOF!
ls -l 2_11b.c
echo x - 2_11b.cmp
sed 's/^X//' > 2_11b.cmp << '!EOF!'
a = 1, b = 2
a = 2, b = 1
a = 1, b = 1
a = 1, b = 1
a = 0, b = 1
a = 1, b = 0
!EOF!
ls -l 2_11b.cmp
echo x - 2_11b1.c
sed 's/^X//' > 2_11b1.c << '!EOF!'
/* Copyright (c) 1990 by AT&T Bell Telephone Laboratories, Incorporated. */
/* The C++ Answer Book */
/* Tony Hansen */
/* All rights reserved. */
swapints(s, t);
!EOF!
ls -l 2_11b1.c
echo x - 2_11btst.c
sed 's/^X//' > 2_11btst.c << '!EOF!'
/* Copyright (c) 1990 by AT&T Bell Telephone Laboratories, Incorporated. */
/* The C++ Answer Book */
/* Tony Hansen */
/* All rights reserved. */
#include <stream.h>
#include "2_11b.c"

main()
{
    int a = 1, b = 2;
    cout << "a = " << a << ", b = " << b << "\n";
    swapints(a, b);
    cout << "a = " << a << ", b = " << b << "\n";
    a = 1, b = 1;
    cout << "a = " << a << ", b = " << b << "\n";
    swapints(a, b);
    cout << "a = " << a << ", b = " << b << "\n";
    a = 0, b = 1;
    cout << "a = " << a << ", b = " << b << "\n";
    swapints(a, b);
    cout << "a = " << a << ", b = " << b << "\n";
    return 0;
}
!EOF!
ls -l 2_11btst.c
echo x - makefile
sed 's/^X//' > makefile << '!EOF!'
CC= CC -I. -I../../CC
all: 2_11atst 2_11btst

2_11atst: 2_11atst.c 2_11a.c
	$(CC) 2_11atst.c -o 2_11atst

2_11btst: 2_11btst.c 2_11b.c
	$(CC) 2_11btst.c -o 2_11btst

test: all 2_11a.cmp 2_11b.cmp
	2_11atst > 2_11a.out
	cmp 2_11a.out 2_11a.cmp
	2_11btst > 2_11b.out
	cmp 2_11b.out 2_11b.cmp
	echo tests done
!EOF!
ls -l makefile
# The following exit is to ensure that extra garbage 
# after the end of the shar file will be ignored.
exit 0