Found 1452 Articles for C

Suppose you want to take a character, then a string and a sentence (string with spaces) using C. So we shall provide three inputs and print the same as output. The maximum size of the string is 500 here.So, if the input is likecharacter = 'T' string = "ProgrammingLanguage" sentence = "I love programming through C", then the output will beYour character: T Your string: ProgrammingLanguage Your sentence: I love programming through CTo solve this, we will follow these steps −For character we need to use scanf("%c", &character);For string we need to use scanf("%s", string);This step is optional, but required ... Read More

In C programming language, generally, the special symbols have some special meaning and they cannot be used for other purposes.Some of the special symbols that are used in C programming are as follows −[] () {}, ; * = #Let’s understand their definitions, which are as follows −Brackets[] − Opening and closing of brackets are used for array element reference, which indicate single and multidimensional subscripts.Parentheses() − These special symbols are used for function calls and function parameters (Read: Functions in C).Braces{} − Opening and closing of curly braces indicates the start and end of a block of code which ... Read More

Constant is also known as variable where once defined, the value never changes during the program execution. Thus, we can declare a variable as constant that refers to fixed values. It is also called as literals. Const keyword has to be used to define a constant.SyntaxThe syntax for constant that is used in C programming language is given below −const type VariableName; (or) const type *VariableName;Different types of constantsThe different types of constants that are used in C programming language are as follows −Integer constants − For example: 1, 0, 34, 4567Floating-point constants − For example: 0.0, 156.89, 23.456Octal & ... Read More

Identifier is one of the tokens which are used in C programming language. It is a name which is used to identify the variables, constants, functions, arrays, and also user-defined data.We cannot use keywords as identifiers because keywords are reserved for special use. Once declared, we can use the identifier in later program statements which refers to the associated value.The special kind of identifier is known as a statement label and it can be used in goto statements.RulesThe rules for naming identifiers are as follows −Identifier names are unique.Cannot use a keyword as identifiers.Identifier has to begin with a letter ... Read More

Keywords are generally called as pre-defined or reserved words in a programming language. Every keyword in C language performs a specific function in a program.Keywords cannot be used as variable names.Keywords have fixed meanings, and that meaning cannot be changed.They are the building block of a 'C' program.C supports 32 keywords.All the keywords are written in lowercase letters.The different types of keywords are as follows −autodoubleintstructbreakelselongswitchcaseenumregistertypedefcharexternreturnunionconstshortfloatunsignedcontinueforsignedvoiddefaultgotosizeofvolatiledoifstaticwhileExampleGiven below is the C program for the Simple Calculator by using the Switch Case − Live Demo#include int main(){    char Operator;    float num1, num2, result = 0;    printf(" Try to Enter ... Read More

A token is nothing but a smallest element of a program which is meaningful to the compiler. The compiler that breaks a program into the smallest units is called tokens and these tokens proceed to the different stages of the compilation.TypesTokens are classified into different types, which are mentioned below −KeywordsIdentifiersConstantsStringsSpecial SymbolsOperatorsExampleGiven below is the C program the use of identifiers, keywords, variables etc. Live Demo#include int main(){    int a, b, c;    printf("enter a and b values: ");    scanf("%d%d", &a, &b);    c=a*b;    printf("value of c=%d", c);    return 0; }OutputWhen the above program is executed, ... Read More

Binary numbers are represented in 1’s and 0’s.Hexadecimal number system with 16 digits is {0, 1, 2, 3…..9, A(10), B(11), ……F(15)}To convert from binary to hex representation, the bit string id is grouped in blocks of 4-bits which are called as nibbles from the least significant side. Each block is replaced by the corresponding hex digit.Let’s see an example to get the clarity on hexadecimal and binary number representation.0011 1110 0101 1011 0001 1101   3    E    5    B   1    DWe write 0X3E5B1D for a hex constant in C language.Another example which What iss how ... Read More

Datatype is the declaration of memory location or variable. Data can be of different types and some of the examples of data types in C language are as follows −Integers, rational numbers, whole numbers, real numbers, complex numbers, vectors, characters etc.Coming to the machine hardware, the data is everything encoded as a string of binary digits 0 and 1 of finite length. In the machines, the integer data is processed in the arithmetic logic unit (ALU) and fractional data is processed in the floating-point unit (FPU). This gets reflected in the built-in or primitive data types of a high-level language.Built-in ... Read More

Computer is an electronic device which can used to store data and to perform operations, based on the size of computer, the computer may be divided into four types they are −Micro-computer (small)Mini-computer (medium)Mainframe computer (large)Supercomputer (very large)Micro-computerThe CPU used in micro-computer is microprocessor, it originated in the late 1970’s. The first micro-computer is around 8-bit microprocessor chips.The chip with 8-bit can retrieve data/instruction from storage, process and manipulate at a time. The cost of micro-computers is economical and are friendly in use. Personal com­puters (PCs) can fall into this category.Mini-computerIt originated in the 1960’s. Initially the mini-computers were 8 ... Read More

Linked lists use dynamic memory allocation and are collection of nodes.Nodes have two parts which are data and link.Types of Linked ListsThe types of linked lists in C programming language are as follows −Single / Singly linked lists.Double / Doubly linked lists.Circular single linked list.Circular double linked list.Double linked listThe diagram given below depicts the representation of double linked list.ExampleFollowing is the C program to insert a node at any position using double linked list − Live Demo#include #include struct node {    int num;    struct node * preptr;    struct node * nextptr; }*stnode, *ennode; void DlListcreation(int ... Read More