Escape sequences are basically control characters used for formatting the output. These are combinations of a backslash and a character in lowercase. We have already used “\n”, which shifts the curser to the next line. Table lists the escape sequences defined in C language. [Read more…] about Escape Sequences in C
We can read a string using the %s conversion specification in the scanf function. However, it has a limitation that the strings entered cannot contain spaces and tabs. To overcome this problem, the C standard library provides the gets function. It allows us to read a line of characters (including spaces and tabs) until the newline character is entered, i. e., the Enter key is pressed. A call to this function takes the following form: [Read more…] about gets() and puts() Functions
The standard C library provides several functions and macros for character 1/0. Here we consider the getchar and putchar macros. As these macros read or write a single character, they are typically used in a loop to read/write a sequence of characters. [Read more…] about getchar() and putchar()
The C standard library provides the executable code and declarations for functionality provided in it. The executable code for the library is provided in separate files, usually in the lib directory, in the installation directory of the compiler. The library files in Turbo C/C++ are named *.LIB, whereas those in the MinGW compiler provided with Dev-C++ and Code :: Blocks are named lib*. a. [Read more…] about What is Header Files in C?
BASIC stands for beginner’s all-purpose symbolic instruction code, and is a computer programming language that was invented in 1964 at Dartmouth University by John G Kemeny and Thomas E Kurtz. BASIC has the advantage of English-like commands that are easier to understand and remember than those of most other languages. Even so, the latest versions of BASIC can do just about anything programming languages like C or Pascal can do. [Read more…] about What is Basic Language (beginner’s all-purpose symbolic instruction code,)?
We have some compiler preprocessor commands. This includes various #include files. Then comes the main function. Some name can also be given to the main function. Then, we have the variable declarations used in the main code. Then we have sub-functions. [Read more…] about Anatomy of C Program
There are many “languages” like, for example C, Fortran, PASCAL etc., that help us to convert an algorithm in to something that a computer can understand. We will focus here only on C programming So. let us start looking at how do we create a “C program”. [Read more…] about Procedure to Create a Program in C Programming Language
Martin Richards developed a high-level computer language called BCPL in the year 1967. The intention was to develop a language for writing an operating system (OS). As you know an OS is software which controls the various processes in a computer system. This language was later improved by Ken Thompson and he gave it a new name B. The basic ideas about some topics such as arrays, etc., which were later inherited by C were developed in BCPL and B. In those days, the development of computers was in infancy. One of the serious constraints experienced while developing the language B was the small computer memory available at that time. [Read more…] about History of C? Why we use C programming language
Another component common to C programs is the header file. This supplies information about the standard library functions. These files all end with the .h extension and are added to the program using the #include pre-processor directive. All C compilers use a pre-processor as their first phase of compilation to manipulate the code of the source file before it is compiled. [Read more…] about What is Libraries file in C
The main role of header file is it is used to share information among various files.To put it brief, if we have several functions say 4 functions named as f1, f2, f3, f4 placed in file say sample.c and if all the functions want to get accessed each other all must be placed in the same file sample.c. [Read more…] about What is the importance of header files
when we said that every language consists of keywords and that these keywords are only understandable by the people who speak the language.The same is with C; keywords are special words that have special meaning in the C language and are reserved by the language. That last sentence has significant meaning, so I will take about it a little later on. [Read more…] about Differentiate Between Keywords and Identifiers