C Tutorial
A Statement is the smallest standalone element of a programming language which in itself is collection of tokens of the language put in some proper sequence as per the syntax rules or grammar of the language. A sequence of one or more statements gives rise to a program. C language makes a distinction between statements … Read more
Error is a condition either during compilation or execution of a program which if not fixed can halt compilation or execution. There are three types of errors — syntax, logical, and run-time errors. Syntax Error These errors occur because of wrongly typed statements, which are not according to the syntax or grammatical rules of the … Read more
C is a case sensitive programming language which means in C two variables named x and X will have different meanings. However, it is a free-form language which means any C statement can start in any column but end of each C statement must be marked with a semicolon (;). In addition, multiple statements can … Read more
C language allows a programmer to create user defined data types. It provides 2 keywords to do so; typedef and enum. typedef typedef allows a programmer to define an identifier that would represent an existing data type. Therefore, the identifier so defined can be later used to declare variables. The general syntax to do so … Read more
After a variable is declared it may be required to initialize it. Initialization of a variable means assigning some value to it. However, technically there is no problem with using a variable without initializing it. But logically it is wrong. When a variable is declared but not initialized it contains some random bogus but valid … Read more
All the variables that are to be used in a program must be declared first. The declaration of variable means specifying the identifier (i.e. variable name), the type and width of data it will hold (i.e. data type) to the compiler. The general syntax of declaring a variable in C is as follows: Also, multiple … Read more
The Character data type is used to specify a variable that will contain characters from ASCII table like ‘A’, ‘%’, and so on. The keyword used by C language to specify some variable as character is char. The width of memory allocated to a character variable is 8 bits. The char variable stores the character … Read more
The Floating Point data type is used to specify a variable that will contain real numbers, i.e. any positive or negative number with fractional part. The keyword used by C language to specify some variable as real is float. The width of memory allocated to floating point variable is 32 bits irrespective of the word … Read more
The Integer data type is used to specify a variable that will contain only integer values, i.e. any positive or negative number without fractional part. The keyword used by C language to specify some variable as integer is int. The width of memory allocated to an integer variable is generally one word. However, the word … Read more
The wide variety of data types supported by C language can be classified into 3 classes: 1. Primary Data Types 2. User-defined Data Types 3. Derived Data Types C supports 4 primary data types which include integer, character, floating point and double-precision floating point. C also supports creating user-defined data types using keywords typedef and … Read more