C Programming Absolute Beginner’s Guide, Third Edition

18. Increasing Your Program’s Output (and Input)

In This Chapter

• Using putchar() and getchar()

• Dealing with the newline consideration

• Getting a little faster with getch()

You can produce input and output in more ways than with the scanf() and printf() functions. This chapter shows you some of C’s built-in I/O functions that you can use to control I/O. You can use these simple functions to build powerful data-entry routines of your own.

These functions offer the primitive capability to input and output one character at a time. Of course, you also can use the %c format specifier with scanf() and printf() for single characters; however, the character I/O functions explained here are a little easier to use, and they provide some capabilities ...