THE TUTORIAL LIBRARY

C tutorials

110 tutorials

C2007-09-26

Structures and Functions in C

The 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

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C2007-09-22

Basics of Structures in C

The 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

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C2007-09-22

Tutorial on Complicated Declarations in C

C 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

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C2007-09-22

Pointers to Functions example in C

In 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,

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C2007-09-22

Command-line Arguments in C

In 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

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C2007-09-22

Pointers vs. Multi-dimensional Arrays in C

Newcomers 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];

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C2007-09-22

Initialization of Pointer Arrays in C

Consider 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

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C2007-09-22

Multi-dimensional Arrays in C (Explained using date conversion program)

C 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.

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C2007-09-22

Pointer Arrays and Pointers to Pointers in C

Since pointers are variables themselves, they can be stored in arrays just as other variables can. Let us illustrate by writing a program that will sort a set of text lines into al

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C2007-09-22

Character Pointers and Functions in C

A string constant, written as "I am a string" is an array of characters. In the internal representation, the array is terminated with the null character '\0' so that programs can f

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C2007-09-22

Address Arithmetic and pointers in C

If p is a pointer to some element of an array, then p++ increments p to point to the next element, and p+=i increments it to point i elements beyond where it currently does. These

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C2007-09-22

Pointers and Arrays in C

In C, there is a strong relationship between pointers and arrays, strong enough that pointers and arrays should be discussed simultaneously. Any operation that can be achieved by a

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