Decision making in C
Decision making is about deciding the order of execution of statements based on certain conditions or repeat a group of statements until certain specified conditions are met. C language handles decision-making by supporting the following statements,
if statement
switch statement
conditional operator statement
goto statem...
Thursday, 1 June 2017
Variables in C Language ~ mkniit
Variables in C Language
A variable is a name that may be used to store a data value. Unlike constant, variables are changeable, we can change value of a variable during execution of a program. A programmer can choose a meaningful variable name. Example : average, height, age, total etc.
Rules to define variable name
Variable name must be upto 8 characters.
Variable name must not start with a digit.
Variable name can consist of alphabets, digits and special symbols like underscore _.
Blank...
Data types in C ~ mkniit
Data types in C Language
Data types specify how we enter data into our programs and what type of data we enter. C language has some predefined set of data types to handle various kinds of data that we use in our program. These datatypes have different storage capacities.
C language supports 2 different type of data types,
Primary data types
These are fundamental data types in C namely integer(int),...
Operators in C Language ~ mkniit
Operators in C Language
C language supports a rich set of built-in operators. An operator is a symbol that tells the compiler to perform certain mathematical or logical manipulations. Operators are used in program to manipulate data and variables.
C operators can be classified into following types,
Arithmetic operators
Relation operators
Logical operators
Bitwise operators
Assignment operators
Conditional operators
Special operat...
Keywords and Identifier in C ~ mkniit
Keywords
Keywords are preserved words that have special meaning in C language. The meaning has already been described. These meaning cannot be changed. There are total 32 keywords in C language.
autodoubleintstruct
breakelselongswitch
caseenumregistertypedef
constexternreturnunion
charfloatshortunsigned
continueforsignedvolatile
defaultgotosizeofvoid
doifstaticwh...
C Syntax Rules ~ mkniit
C Language Syntax Rules
C language syntax specify rules for sequence of characters to be written in C language. The rule specify how character sequence will be grouped together to form tokens. A smallest individual unit in c program is known as C Tokens. Tokens are either keyword, identifier, constant, variable or any symbol which has some meaning in C language. A C program can also be called as collection of various tokens.
Example of C tokens,
intcurly braces { }comme...
C Input / Output ~ mkniit
C Input output function
C programming language provides many of the built-in functions to read given input and write data on screen, printer or in any file.
scanf() and printf() functions
#include<stdio.h>
#include<conio.h>
void main()
{
int i;
printf("Enter a value");
scanf("%d",&i);
printf( "\nYou entered: %d",i);
getch()...
My First C program ~ mkniit
First C language Program
Lets see how to write a simple c program
#include <stdio.h>
#include <conio.h>
int main()
{
printf("Hello,World");
getch();
return 0;
}
Different parts of C program.
Pre-processor
Header file
Function
Variab...
Features of C ~ mkniit
Features of C language
It is a robust language with rich set of built-in functions and operators that can be used to write any complex program.
The C compiler combines the capabilities of an assembly language with features of a high-level language.
Programs Written in C are efficient and fast. This is due to its variety of data type and powerful operators.
It is many time faster than BASIC.
C is highly portable this means that programs once written can be run on another machines...
Overview of C language ~ mkniit
C is a structured programming language developed by Dennis Ritchie in 1973 at Bell Laboratories. It is one of the most popular computer languages today because of its structure, high-level abstraction, machine independent feature. C language was developed with UNIX operating system, so it is strongly associated with UNIX, which is one of the most popular network operating system in use today and heart of Internet data superhighway.
History of C language
C language has evolved from...
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