THE TUTORIAL LIBRARY
In this tutorial we will write the innards of a table-lookup package, to illustrate more aspects of structures. This code is typical of what might be found in the symbol table mana
Read tutorialOne solution is to keep the set of words seen so far sorted at all times, by placing each word into its proper position in the order as it arrives. This shouldn't be done by shifti
Read tutorialTo illustrate some of the considerations involved with pointers to and arrays of structures, let us write the keyword-counting program using pointers instead of array indices.
Read tutorialConsider writing a program to count the occurrences of each C keyword. We need an array of character strings to hold the names, and an array of integers for the counts. One possibi
Read tutorialThe only legal operations on a structure are copying it or assigning to it as a unit, taking its address with &, and accessing its members. Copy and assignment include passing argu
Read tutorialThe keyword struct introduces a structure declaration, which is a list of declarations enclosed in braces. An optional name called a structure tag may follow the word struct (as wi
Read tutorialC is sometimes castigated for the syntax of its declarations, particularly ones that involve pointers to functions. The syntax is an attempt to make the declaration and the use agr
Read tutorialIn C, a function itself is not a variable, but it is possible to define pointers to functions, which can be assigned, placed in arrays, passed to functions, returned by functions,
Read tutorialIn environments that support C, there is a way to pass command-line arguments or parameters to a program when it begins executing. When main is called, it is called with two argume
Read tutorialNewcomers to C are sometimes confused about the difference between a two-dimensional array and an array of pointers. int a[10][20]; vs int *b[10];
Read tutorialConsider the problem of writing a function month_name(n), which returns a pointer to a character string containing the name of the n-th month. This is an ideal application for an i
Read tutorialC provides rectangular multi-dimensional arrays, although in practice they are much less used than arrays of pointers. In this section, we will show some of their properties.
Read tutorialOne example today. A better developer tomorrow.