C example program

You can download all these projects with source code for free; make sure to check their individual post description as well. They quickly become able to write programs that include functions, arrays and pointers, file handling and data structure, etc. But, when it comes to building a mini-game, an application, or a small project, incorporating all these features in one compact program becomes difficult. In such case, reference projects always come in handy.

The C projects softwares enlisted below are mini projects, mini games, and small applications. Most of these projects utilize functions, file handling, and data structure effectively. In some large and somewhat complicated projects, comments are provided in the multiple lines of the source code to help you understand the project better.

More projects for you! There are always some rooms to add new features, and make the project a even better one. Just send us the source code and a brief abstract of your project at codewithc gmail.

Also, if you have a project request, you can mail us or mention your queries in the comments below.

c example program

I need college time table based on some constraints like number of teachers etc. So can u plz give some ideas? A warning message should be displayed if a student is taking more than 21 credits hours and less than 15 credit hours. Source code already added after first pera in above post you need to unlock it by sharing on facebook. Sir, could u plz mail me project on the car showroom management system.

All the project available with us can be searched for and found in the site. Can You please give me a dictionary code using file handling? But you can refer Bus Reservation System Project.

These are the most simple and easy projects we developed. Is there any website are available? Please, Google it; you may find something useful.In this tutorial, you will learn about different operators in C programming with the help of examples. An operator is a symbol that operates on a value or a variable. An arithmetic operator performs mathematical operations such as addition, subtraction, multiplication, division etc on numerical values constants and variables.

However, the output is 2 in the program. It is because both the variables a and b are integers. Hence, the output is also an integer. The compiler neglects the term after the decimal point and shows answer 2 instead of 2.

C for Loop

Then in C programming. These two operators are unary operators, meaning they only operate on a single operand. Visit this page to learn more about how increment and decrement operators work when used as postfix. An assignment operator is used for assigning a value to a variable. A relational operator checks the relationship between two operands. If the relation is true, it returns 1; if the relation is false, it returns value 0. Relational operators are used in decision making and loops.

An expression containing logical operator returns either 0 or 1 depending upon whether expression results true or false. Logical operators are commonly used in decision making in C programming. During computation, mathematical operations like: addition, subtraction, multiplication, division, etc are converted to bit-level which makes processing faster and saves power.

c example program

Visit bitwise operator in C to learn more. The sizeof is a unary operator that returns the size of data constants, variables, array, structure, etc. Other operators such as ternary operator? Course Index Explore Programiz. Popular Tutorials Data Types in C. C for Loop. Arrays in C Programming. Pointers in C.In this tutorial, you will learn to create for loop in C programming with the help of examples.


We will learn about for loop in this tutorial. In the next tutorial, we will learn about while and do This process goes on until the test expression is false. When the test expression is false, the loop terminates. To learn more about test expression when the test expression is evaluated to true and falsecheck out relational and logical operators. The value entered by the user is stored in the variable num.

Suppose, the user entered The count is initialized to 1 and the test expression is evaluated. Again, the test expression is evaluated. Since 2 is also less than 10, the test expression is evaluated to true and the body of for loop is executed. Now, the sum will equal 3.

C Examples

When the count is 11, the test expression is evaluated to 0 falseand the loop terminates. We will learn about while loop and do Course Index Explore Programiz.

Popular Tutorials Data Types in C. C for Loop. Arrays in C Programming. Pointers in C. Find roots of a quadratic equation. Print Pyramids and Patterns.

Check prime number.

C Programming Examples

Print the Fibonacci series. Reference Materials string. Start Learning C. Explore C Examples. Join our newsletter for the latest updates. This is required. Table of Contents C for loop How for loop works? C for Loop In this tutorial, you will learn to create for loop in C programming with the help of examples. In programming, a loop is used to repeat a block of code until the specified condition is met.

C programming has three types of loops: for loop while loop do The initialization statement is executed only once. Then, the test expression is evaluated. If the test expression is evaluated to false, the for loop is terminated. However, if the test expression is evaluated to true, statements inside the body of for loop are executed, and the update expression is updated. Again the test expression is evaluated.

c example program

Since 1 less than 11 is true, the body of for loop is executed. This will print the 1 value of i on the screen.Suppose we need to create a program to create a circle and color it. We can create two functions to solve this problem:. Dividing a complex problem into smaller chunks makes our program easy to understand and reusable.

A user-defined function groups code to perform a specific task and that group of code is given a name identifier. When the function is invoked from any part of the program, it all executes the codes defined in the body of the function. Note: We will learn about returnType and parameters later in this tutorial. In the above program, we have declared a function named greet.

Pointers in C

To use the greet function, we need to call it. As mentioned above, a function can be declared with parameters arguments. A parameter is a value that is passed when declaring a function. We pass a value to the function parameter while calling the function. In the above program, we have used a function that has one int parameter and one double parameter.

We then pass num1 and num2 as arguments. These values are stored by the function parameters n1 and n2 respectively. Note: The type of the arguments passed while calling the function must match with the corresponding parameters defined in the function declaration. It's also possible to return a value from a function. For this, we need to specify the returnType of the function during function declaration. Here, we have the data type int instead of void. This means that the function returns an int value.

The return statement denotes that the function has ended.A union is a special data type available in C that allows to store different data types in the same memory location.

You can define a union with many members, but only one member can contain a value at any given time. Unions provide an efficient way of using the same memory location for multiple-purpose. To define a union, you must use the union statement in the same way as you did while defining a structure. The union statement defines a new data type with more than one member for your program. The union tag is optional and each member definition is a normal variable definition, such as int i; or float f; or any other valid variable definition.

At the end of the union's definition, before the final semicolon, you can specify one or more union variables but it is optional. Now, a variable of Data type can store an integer, a floating-point number, or a string of characters.

It means a single variable, i. You can use any built-in or user defined data types inside a union based on your requirement. The memory occupied by a union will be large enough to hold the largest member of the union. For example, in the above example, Data type will occupy 20 bytes of memory space because this is the maximum space which can be occupied by a character string.

To access any member of a union, we use the member access operator. The member access operator is coded as a period between the union variable name and the union member that we wish to access.

You would use the keyword union to define variables of union type. Here, we can see that the values of i and f members of union got corrupted because the final value assigned to the variable has occupied the memory location and this is the reason that the value of str member is getting printed very well.

C - Unions Advertisements. Previous Page. Next Page. Live Demo. Previous Page Print Page. Dashboard Logout.The Pointer in C, is a variable that stores address of another variable. A pointer can also be used to refer to another pointer function. The purpose of pointer is to save memory space and achieve faster execution time. How to Use Pointers in C If we declare a variable v of type int, v will actually store a value. However, each variable, apart from value, also has its address or, simply put, where it is located in the memory.

If you print the address of a variable on the screen, it will look like a totally random number moreover, it can be different from run to run. Let's try this in practice with pointer in C example The output of this program is Now, what is a pointer? Instead of storing a value, a pointer will y store the address of a variable. Pointers can be named anything you want as long as they obey C's naming rules. A pointer declaration has the following form.

If pointers in C programming are not uninitialized and used in the program, the results are unpredictable and potentially disastrous. Pointer initialization is done with the following syntax. This method is useful when you do not have any address assigned to the pointer. A null pointer always contains value 0. It does not have any standard data type. A void pointer is created by using the keyword void.

It can be used to store an address of any variable. These types of C pointers are not efficient because they may point to some unknown memory location which may cause problems in our program and it may lead to crashing of the program. One should always be careful while working with wild pointers. The pointer will be increased or decreased by N times the number of byte s of the type of the variable.

Pointers make it easy to access each array element. We can manipulate strings using pointers. Pointers provide an efficient way for accessing the elements of an array structure. Pointers are used for dynamic memory allocation as well as deallocation. Pointers are used to form complex data structures such as linked list, graph, tree, etc.

Disadvantages of Pointers in C Pointers are a little complex to understand. Pointers can lead to various errors such as segmentation faults or can access a memory location which is not required at all. If an incorrect value is provided to a pointer, it may cause memory corruption.

Pointers are also responsible for memory leakage. Pointers are comparatively slower than that of the variables. Programmers find it very difficult to work with the pointers; therefore it is programmer's responsibility to manipulate a pointer carefully. Summary A pointer is nothing but a memory location where data is stored.

A pointer is used to access the memory location.C programs with output showing usage of operators, loops, functions, arrays, performing operations on strings, files, pointers. Download executable files and execute them without compiling the source file. The first program, prints "Hello World.

Feel at home. If you are using GCC on Linux operating system, then you may need to modify the programs. For example, consider the following program that prints the first ten natural numbers. The program for GCC must be like:. You can specify the output file name as "gcc numbers. A program consists of functions that contain instructions given to a machine to perform a task. The process of writing it includes designing an algorithm, drawing a flowchart, and then writing code.

After writing it, you need to test it and debug it if it does not produce the required output. To write a program, you need a text editor use your favorite one and a compiler. A compiler converts source code into machine code, which consists of zero's and one's only, ready to be executed on a machine. Code::Blocks IDE provides an ideal environment for development. A program must have at least a main function. A function consists of declarations and statements.

A statement is an expression followed by a semicolon. To use a variable, we must indicate its type, whether it is an integer, float, character, or others. C language has many built-in data types, and we can create ours using structures and unions.

Every data type has its size that may depend on the machine; for example, an integer may be of 2 or 4 Bytes. Data is stored in a binary form, i. Keywords such as "switch," "case," "default," "register," are reserved words with predefined meaning and can't be used as the name of a variable or a function.

Memory can be allocated at compile-time or run-time using malloc and calloc functions. C language has many features such as recursion, preprocessor, conditional compilation, portability, pointers, multi-threading by using external libraries, dynamic memory allocation. Thanks to these, it is used for making portable software programs and applications. Using networking API's users can communicate and interact with each other and share files. The process of writing a program known as coding requires knowledge of programming language and logic to achieve the desired output.