28.7 Summary

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What you must do to get C to compile with a C++ compiler:

• Change K&R-style function headers into standard C++ headers.

• Add prototypes .

• Rename any functions or variables that are C++ keywords.

• Change setjmp / longjmp calls into catch / throw operations.

Once you've done these tasks , you have a C+ ¹ / ₂ program. It works, but it's really a C program in C++'s clothing. To convert it to a real C++ program, you also need to do the following:

• Change malloc to new .

• Change free to delete or delete [] calls.

• Turn printf and scanf calls into cout and cin .

• When turning struct declarations into class variables, be careful of read , write , and memset functions that use the entire structure or class.

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