First commit

9781484200087_Exercise_Solutions/Chapter 1/Soln1_01.cpp

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+// Exercise 1.1 Writing the line "Hello World" to the screen.
+
+#include <iostream>
+
+int main()
+{
+  std::cout << "Hello World" << std::endl;
+}

9781484200087_Exercise_Solutions/Chapter 1/Soln1_02.cpp

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+// Exercise 1.2 Write your name and age on successive lines.
+// There are several possibilities. You can do it in one statement for example.
+// You could also output '\n' to go to a new line.
+
+#include <iostream>
+
+int main()
+{
+  std::cout << "Phile McCavity" << std::endl;       // Name
+  std::cout << "Age: 88" << std::endl;              // and age
+)      

9781484200087_Exercise_Solutions/Chapter 1/Soln1_03.cpp

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+// Exercise 1.3 Spot the errors. The correct version should closely resemble the answer to exercise 1.1.
+
+include <iostream>                            // # charaxcter missing before include
+
+Int main()                                    // Should be int, not Int
+{
+  std:cout << "Hello World" << std:endl       // A semicolon is missing from the end of this line
+                                              // cout and endl must be prefixed with std::
+)     

9781484200087_Exercise_Solutions/Chapter 10/Soln10_01/main.cpp

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+// Exercise 10.1 Using multiple files and preprocessor directives.  File: main.cpp
+// We have seven files in all. 
+// The file main.cpp only needs to #include  two of our three new header files,
+// since all it does is call the functions printthis() and printthat():
+
+#include "printthis.h"
+#include "printthat.h"
+
+int main()
+{
+  print_this("This is a test string using printthis().");
+  print_that("This is a test string using printthat().");
+}

9781484200087_Exercise_Solutions/Chapter 10/Soln10_01/print.cpp

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+// Exercise 10.1 Using multiple files and preprocessor directives.  File: print.cpp
+// We have seven files in all. 
+// The file print.cpp contains the definition for the function print().
+
+#include "print.h"
+#include <string>
+#include <iostream>
+using std::string;
+
+void print(const string& s)
+{
+  std::cout << s << std::endl;
+}

9781484200087_Exercise_Solutions/Chapter 10/Soln10_01/print.h

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+// Exercise 10.1 Using multiple files and preprocessor directives.  File: print.h
+// We have seven files in all. 
+// The file print.h contains the prototype for the function print().
+
+#ifndef PRINT_H
+#define PRINT_H
+
+#include <string>
+using std::string;
+
+// Function prototype
+void print(const string& s);
+
+#endif

9781484200087_Exercise_Solutions/Chapter 10/Soln10_01/printthat.cpp

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+// Exercise 10.1 Using multiple files and preprocessor directives.  File: printthat.cpp
+// We have seven files in all. 
+// The file printthat.cpp contains the definition for the function printthat().
+// Each of the files printthis.cpp and printthat.cpp must #include the file print.h,
+// as well as its own header file: 
+#include "printthat.h"
+#include "print.h"
+
+void print_that(const string& s) 
+{
+  print(s);
+}

9781484200087_Exercise_Solutions/Chapter 10/Soln10_01/printthat.h

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+// Exercise 10.1 Using multiple files and preprocessor directives.  File: printthat.h
+// We have seven files in all. 
+// The file printthat.h contains the prototype for the function print_that().
+#ifndef PRINTTHAT_H
+#define PRINTTHAT_H
+
+#include <string>
+using std::string;
+
+// Function prototype
+void print_that(const string& s);
+
+#endif

9781484200087_Exercise_Solutions/Chapter 10/Soln10_01/printthis.cpp

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+// Exercise 10.1 Using multiple files and preprocessor directives.  File: printthis.cpp
+// We have seven files in all. 
+// The file printthis.cpp contains the definition for the function printthis().
+// Each of the files printthis.cpp and printthat.cpp must #include the file print.h,
+// as well as its own header file: 
+#include "printthis.h"
+#include "print.h"
+
+void print_this(const string& s)
+{
+  print(s);
+}

9781484200087_Exercise_Solutions/Chapter 10/Soln10_01/printthis.h

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+// Exercise 10.1 Using multiple files and preprocessor directives.  File: printthis.h
+// We have seven files in all. 
+// The file printthis.h contains the prototype for the function print_this().
+
+#ifndef PRINTTHIS_H
+#define PRINTTHIS_H
+
+#include <string>
+using std::string;
+
+// Function prototype
+void print_this(const string& s);
+
+#endif

9781484200087_Exercise_Solutions/Chapter 10/Soln10_02/main.cpp

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+// Exercise 10.2 Using a global variable to count calls to print().  File: main.cpp
+// Only this file and print.cpp are different from Ex 10.1. 
+
+#include "printthis.h"
+#include "printthat.h"
+
+#include <iostream>                                                    // ADDED
+extern int print_count = 0;                                            // Counts calls to print() ADDED
+
+int main()
+{
+  print_this("This is a test string using printthis().");
+  print_that("This is a test string using printthat().");
+
+  std::cout << "The print() function has been called a total of "      // ADDED
+            << print_count << " times. " << std::endl;                 // ADDED
+}

9781484200087_Exercise_Solutions/Chapter 10/Soln10_02/print.cpp

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+// Exercise 10.2 Using a global variable to count calls to print().  File: print.cpp
+// Only this file and main.cpp are different from Ex 10.1. 
+
+#include "print.h"
+#include <string>
+#include <iostream>
+using std::string;
+
+extern int print_count;      // ADDED
+
+void print(const string& s)
+{
+  std::cout << s << std::endl;
+  ++print_count;             // ADDED
+
+}

9781484200087_Exercise_Solutions/Chapter 10/Soln10_02/print.h

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+// Exercise 10.2 Using multiple files and preprocessor directives.  File: print.h
+// We have seven files in all. 
+// The file print.h contains the prototype for the function print().
+
+#ifndef PRINT_H
+#define PRINT_H
+
+#include <string>
+using std::string;
+
+// Function prototype
+void print(const string& s);
+
+#endif

9781484200087_Exercise_Solutions/Chapter 10/Soln10_02/printthat.cpp

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+// Exercise 10.2 Using multiple files and preprocessor directives.  File: printthat.cpp
+// We have seven files in all. 
+// The file printthat.cpp contains the definition for the function printthat().
+// Each of the files printthis.cpp and printthat.cpp must #include the file print.h,
+// as well as its own header file: 
+#include "printthat.h"
+#include "print.h"
+
+void print_that(const string& s)
+{
+  print(s);
+}

9781484200087_Exercise_Solutions/Chapter 10/Soln10_02/printthat.h

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+// Exercise 10.2 Using multiple files and preprocessor directives.  File: printthat.h
+// We have seven files in all. 
+// The file printthat.h contains the prototype for the function print_that().
+#ifndef PRINTTHAT_H
+#define PRINTTHAT_H
+
+#include <string>
+using std::string;
+
+// Function prototype
+void print_that(const string& s);
+
+#endif

9781484200087_Exercise_Solutions/Chapter 10/Soln10_02/printthis.cpp

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+// Exercise 10.2 Using multiple files and preprocessor directives.  File: printthis.cpp
+// We have seven files in all. 
+// The file printthis.cpp contains the definition for the function printthis().
+// Each of the files printthis.cpp and printthat.cpp must #include the file print.h,
+// as well as its own header file: 
+#include "printthis.h"
+#include "print.h"
+
+void print_this(const string& s)
+{
+  print(s);
+}

9781484200087_Exercise_Solutions/Chapter 10/Soln10_02/printthis.h

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+// Exercise 10.2 Using multiple files and preprocessor directives.  File: printthis.h
+// We have seven files in all. 
+// The file printthis.h contains the prototype for the function print_this().
+
+#ifndef PRINTTHIS_H
+#define PRINTTHIS_H
+
+#include <string>
+using std::string;
+
+// Function prototype
+void print_this(const string& s);
+
+#endif

9781484200087_Exercise_Solutions/Chapter 10/Soln10_03/main.cpp

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+// Exercise 10.3 Using a global variable to count calls to print().  File: main.cpp
+// This file is the same as Ex 10.2. 
+
+#include "printthis.h"
+#include "printthat.h"
+
+#include <iostream>                                                    // ADDED
+extern int print_count = 0;                                            // Counts calls to print() ADDED
+
+int main(){
+  print_this("This is a test string using printthis().");
+  print_that("This is a test string using printthat().");
+
+  std::cout << "The print() function has been called a total of "      // ADDED
+            << print_count << " times. " << std::endl;                 // ADDED
+}

9781484200087_Exercise_Solutions/Chapter 10/Soln10_03/print.cpp

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+// Exercise 10.3 Using namespaces. The solution is as Exercise 10.2, with changes to
+// print.h, print.cpp, printthis.cpp and printthat.cpp: 
+
+// print.cpp
+#include "print.h"
+#include <string>
+#include <iostream>
+using std::string;
+
+void print1::print(const string& s) 
+{
+  std::cout << s << " (Namespace name is print1.) " << std::endl;
+}
+
+void print2::print(const string& s) 
+{
+  std::cout << s << " (Namespace name is print2.) " << std::endl;
+}

9781484200087_Exercise_Solutions/Chapter 10/Soln10_03/print.h

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+// Exercise 10.3 Using namespaces. The solution is as Exercise 10.2, with changes to
+// print.h, print.cpp, printthis.cpp and printthat.cpp: 
+
+// print.h
+#ifndef PRINT_H
+#define PRINT_H
+
+#include <string>
+using std::string;
+
+namespace print1 
+{
+  // Function prototype
+  void print(const string& s);
+}
+
+namespace print2 
+{
+  // Function prototype
+  void print(const string& s);
+}
+
+#endif

9781484200087_Exercise_Solutions/Chapter 10/Soln10_03/printthat.cpp

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+// Exercise 10.3 Using namespaces. The solution is as Exercise 10.2, with changes to
+// print.h, print.cpp, printthis.cpp and printthat.cpp: 
+
+// printthat.cpp
+#include "printthat.h"
+#include "print.h"
+
+void print_that(const string& s)
+{
+  print2::print(s);
+}

9781484200087_Exercise_Solutions/Chapter 10/Soln10_03/printthat.h

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+// Exercise 10.2 Using multiple files and preprocessor directives.  File: printthat.h
+// We have seven files in all. 
+// The file printthat.h contains the prototype for the function print_that()
+// and is the same as for Exercise 10.2.
+#ifndef PRINTTHAT_H
+#define PRINTTHAT_H
+
+#include <string>
+using std::string;
+
+// Function prototype
+void print_that(const string& s);
+
+#endif

9781484200087_Exercise_Solutions/Chapter 10/Soln10_03/printthis.cpp

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+// Exercise 10.3 Using namespaces. The solution is as Exercise 10.2, with changes to
+// print.h, print.cpp, printthis.cpp and printthat.cpp: 
+
+// printthis.cpp
+#include "printthis.h"
+#include "print.h"
+
+void print_this(const string& s)
+{
+  print1::print(s);
+}

9781484200087_Exercise_Solutions/Chapter 10/Soln10_03/printthis.h

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+// Exercise 10.3 Using multiple files and preprocessor directives.  File: printthis.h
+// We have seven files in all. 
+// This file printthis.h contains the prototype for the function print_this()
+// and is the same as for Exercise 10.2.
+
+#ifndef PRINTTHIS_H
+#define PRINTTHIS_H
+
+#include <string>
+using std::string;
+
+// Function prototype
+void print_this(const string& s);
+
+#endif

9781484200087_Exercise_Solutions/Chapter 10/Soln10_04/main.cpp

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+// Exercise 10.4 More applications of preprocessor directives. 
+
+// main.cpp
+#include "printthis.h"
+#include "printthat.h"
+
+//#define DO_THIS                                                      // uncomment to #define the token
+
+#ifdef DO_THIS
+#define PRINT(val) print_this(#val);
+#else 
+#define PRINT(val) print_that(#val);
+#endif
+
+int main() 
+{
+#ifdef DO_THIS
+  print_this("This is a test string using printthis().");
+#else 
+  print_that("This is a test string using printthat().");
+#endif
+
+  std::cout << "The print() function has been called a total of "      // ADDED
+            << print_count << " times. " << std::endl;                 // ADDED
+}