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Books provide a better insight into the various concepts the subject holds, also allows the reader to go in-depth into the topics. The various books provided in this lecture notes are highly informative, moreover, there is a good range from beginner level to advance.
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All examples use the up-to-date API classes, and are created from within Android Studio, the official Android development environment that helps supercharge your application development process. This book also acts as a refresher for those who already have experience of using Java on Android to advance their knowledge and make fast progress through the early projects.
John Horton is a programming and gaming enthusiast based in the UK. He has a passion for writing apps, games, books, and blog articles. He is the founder of Game Code School. Programming is a way for us to deliver our instructions to the computer. C is a programming language.
C is one of the oldest and finest programming languages. C was developed by Dennis Ritchie in C is a language that is used to program a wide variety of systems. Some of the uses of C are as follows:. Similar to that variable in c stores the value of a constant. These are reserved words whose meaning is already known to the compiler. There are 32 keywords available in c:. All c programs have to follow a basic structure.
A c program starts with the main function and executes instructions presents inside it. Each instruction terminated with a semicolon ;. Comments are used to clarify something about the program in plain language. It is a way for us to add notes to our program. There are two types of comments in c:. A compiler is a computer program that converts a c program into machine language so that it can be easily understood by the computer.
A program is written in plain text. This plain text is a combination of instructions in a particular sequence. The compiler performs some basic checks and finally converts the program into an executable. C language has a lot of valuable library functions which is used to carry out a certain task; for instance, printf function is used to print values on the screen. In order to take input from the user and assign it to a variable, we use scanf function.
Calculate the area of a circle and modify the same program to calculate the volume of a cylinder given its radius and height.
Write a program to convert Celsius Centigrade degrees temperature to Fahrenheit. Write a program to calculate simple interest for a set of values representing principle, no of years, and rate of interest.
A C-program is a set of instructions. Just like a recipe - which contains instructions to prepare a particular dish. Solution- 3. When operators of equal priority are present in an expression, the tie is taken care of by associativity. Write a program to check whether a number is divisible 97 or not. Sometimes we want to watch comedy videos on youtube if the day is Sunday.
Sometimes we order junk food if it is our friend's birthday in the hostel. You might want to buy an umbrella if it's raining and you have the money.
You order the meal if dal or your favorite bhindi is listed on the menu. Relational operators are used to evaluate conditions true or false inside the if statements.
Some examples of relational operators are:. The condition can be any valid expression. In C, a non-zero value is considered to be true. As the number of conditions increases, the level of indentation increases.
This reduces readability. Logical operators come to the rescue in such cases. Instead of using multiple if statements, we can also use else if along with if, thus forming an if-else if-else ladder. Using if-else if-else reduces indents. Switch-case is used when we have to make a choice between the number of alternatives for a given variable. The value of integer-expression is matched against c1,c2,c Quick Quiz : Write a program to find the grade of a student given his marks based on below:.
Sometimes we want our programs to execute a few sets of instructions over and over again, for eg. Printing 1 to , first even numbers, etc. Hence loops make it easy for a programmer to tell the computer that a given set of instructions must be executed repeatedly.
Types of Loops : Primarily, there are three types of loop in c language:. If the condition never becomes false, the while loop keeps getting executed. Such a loop is known as an infinite loop. Quick Quiz: Write a program to print natural numbers from 10 to 20 when the initial loop counter i is initialized to 0. Quick Quiz : Write a program to print first n natural numbers using for loop.
Quick Quiz : Write a program to print n natural numbers in reverse order. The break statement is used to exit the loop irrespective of whether the condition is true or false.
The continue statement in c is used to immediately move to the next of the loop. The control is taken to the next iteration, thus skipping everything below continue inside the loop for that iteration. Sometimes, the name of the variable might not indicate the behavior of the program. What can be done using one type of loop can also be done using the other two types of loops — True or False. Write a program to calculate the sum of the numbers occurring in the multiplication table of 8.
Consider 8x1 to 8x Write a program to calculate the factorial of a given number using for loop. Write a program to check whether a given number is prime or not using loops. Problem: This is going to be fun!! We will write a program that generates a random number and asks the player to guess it. When the user guesses the correct number, the program displays the number of guesses the player used to arrive at the number. Sometimes our program gets bigger in size, and its not possible for a programmer to track which piece of code is doing what.
The function is a way to break our code into chunks so that it is possible for a programmer to reuse them. A function is a block of code that performs a particular task. A function can be reused by the programmer in a given program any number of times.
Function prototype is a way to tell the compiler about the function we are going to define in the program. Function call is a way to tell the compiler to execute the function body at the time the call is made. Note that the program execution starts from the main function in the sequence the instructions are written. This part contains the exact set of instructions that are executed during the function call. When a function is called from main , the main function falls asleep and gets temporarily suspended.
During this time, the control goes to the function being called when the function body is done executing main resumes. The above prototype means that sum is a function which takes values a of type int and b of type int and returns a value of type int.
Now we can call sum 2,3 [here 2 and 3 are arguments]; from main to get 5 in return. Parameters are the values or variable placeholders in the function definition. Arguments are the actual values passed to the function to make a call.
Quick Quiz: Use the library function to calculate the area of a square with side a. Since we can write factorial of a number in terms of itself, we can program it using recursion.
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