Learn C By Examples – Quick Guide ”; Previous Next Small & Simple Programs in C Let”s first start with very small & simple programs to get basic idea of C programming code structure. We shall get the basic idea of variable declaration, scanning and printing etc. Basic Programs We shall see the classic “Hello World!” program to get an insight of how a program is written in c. We have programs on variables available in c. These are most commonly used elementary variables. Also, we shall see how arithmetic operations can be performed in a c program. “Hello World!” program in C Variables in C Arithmetic Operations General Programs There are programs which we use in our routine, or say a programmer”s routine. These programs are easy to understand and should help in understanding style of C programming. We shall see here some of these programs and some cool tricks. Compare two integers Compare three integers Find if a given number is even or odd Find if a given number is positive or negative Find if a year is leap year or not Swapping values using third variable Swapping values without using third variable Loop Examples in C This segment is designed to give the learner an enhanced view of how loops work in c languages. We shall see simple loops like for, while and do-while, along with nested loops. Simple Loop Programs Lets see some simple loop program we use in day-to-day life − Simple Counting program in C Table of Counting program in C Table program in C Table of tables program in C Revere counting program in C Printing even values in a loop Printing odd values in a loop Patterns Examples in C This section is full of examples that uses nested loops in a controlled manner. We may see that the outer loop is controlling the inner one etc. We have taken the simplest examples which are very common too. Equilateral triangle printing in C Right triangle printing in C Up-side down triangle printing in C Top down triangle printing in C Top down right triangle printing in C Floyd”s triangle printing in C Pascal”s triangle printing in C Array Example Programs in C Array is a collection of homogenous data, arranged in sequential format. Learning the concept of arrays in C is very important as it is the basic data structure. Here, in this section, we shall look into some very useful array programs to give you insight of how C programming language deals with arrays. Single Array Programs These programs are basic and involves only a single array variable. We shall learn how to handle array variable in different situation. Program to print an array Program to print an array in reverse order Program to calculate sum of an array Program to calculate average of an array Program to find the largest element of an array Program to find the second largest element of an array Program to find the smallest element of an array Multi Array Programs These programs involve more than one array. This section should give you some easy techniques to handle more than one array variables in a program. Program to copy an array to another array Program to copy an array to another array in reverse Program to divide one array into two arrays Program to concatenate arrays String Programs in C Strings are actually one-dimensional array of characters terminated by a null character ””. Thus a null-terminated string contains the characters that comprise the string followed by a null. The following declaration and initialization create a string consisting of the word “Hello”. To hold the null character at the end of the array, the size of the character array containing the string is one more than the number of characters in the word “Hello.” char greeting[6] = {”H”, ”e”, ”l”, ”l”, ”o”, ””}; If you follow the rule of array initialization then you can write the above statement as follows − char greeting[] = “Hello”; In this section, we shall learn how to work with string C programming language. We have divided the examples in multiple sub-sections to have a better understanding of what we are doing − Basic Programs These programs made specially to understand the basics of strings in C. These program deals with string as an array of characters. Program to print a string in C Program to print a string character by character in C Program to find string length without function in C Program to count character occurrent in C Program to count vowels occurrent in C Program to sort string characters in C Multi-string Programs These programs has more than one string variables. These should give you an insight of how to work with multiple string variables in C programming language − Program to copy string in C Program to reverse string in C Program to search strings in C Program to swap strings in C Program to compare two strings in C Program to concatenate two strings in C String Anagram program in in C Long String Programs A sentence or a line can be considered as a long string. The following programs deals with the same concept − C Program to reverse words in a line C Program to reverse a line Mathematical Programs in C This section has been developed to introduce some common mathematical problems that can be solved using c programming language. Numbers & Series Lets start with some designated number and series to program. Here we shall see how to program to get Armstrong, Prime, Factorial numbers and Fibonacci series. Armstrong Number Prime Number Factorial Number Fibonacci Series Average Here we shall learn how to program to find average and percentages. Average Percentage Mean, Median & Mode All three of mean, median and mode are types of different kind of averages. Mean deals with common way of finding average. Median is the centeral value of a list and mode is