Case Study: A String Class

• Build class String
  • To handle String creation, manipulation
  • Class string in standard library (more Chapter 15)
• Conversion constructor
  • Single-argument constructor
  • Turns objects of other types into class objects
    • String s1("hi");
    • Creates a String from a char *
  • Any single-argument constructor is a conversion constructor

The programs of Figs. 3.12-3.21 demonstrates the building of our own String class to handle the creation and manipulation of strings.

Figure 3.12: String class definition with operator overloading. (part 1 of 2)

Figure 3.13: String class definition with operator overloading. (part 2 of 2)

Figure 3.14: String class member-function and friend-function definition. (part 1 of 4)

Figure 3.15: String class member-function and friend-function definition. (part 2 of 4)

Figure 3.16: String class member-function and friend-function definition. (part 3 of 4)

Figure 3.17: String class member-function and friend-function definition. (part 4 of 4)

Figure 3.18: String class test program. (part 1 of 2)

Figure 3.19: String class test program. (part 2 of 2)

Figure 3.20: String class test program, output. (part 1 of 2)

Figure 3.21: String class test program, output. (part 2 of 2)