To learn the c program first u have to now the base of c program.
LANGUAGE:
A programming language is which designed and developed by the programmer and put into the system to perform some particular action or task or functions
USES:
this programming language is mainly used for solving the real time problems like ATM, RAILWAY RESERVATIONS,ETC….
BASIC LANGUAGES:
Basic language which is present before c language is BASIC,PASCAL,FORTON,COBOL ETC,……
INTRODUCTION:
At first there was a language named BCPL at 1960’s .which was not popular so that language had been classified into two they are B AND C
Then the properties in c language was much used and the designed and developed by DENNIS RITCHIE AND BRAIN KERNIGHAN at BELL LAB…..
characteristics of c language :
- case sensitive language
- free form language
- procedure oriented language
- structured programming language
- protocol type language
- top down approach language
CASE SENSITIVE LANGUAGE:
the upper case an the lower case letters in c program are used in some particular areas only …
STRUCTURE PROGRAMMING LANGUAGE:
IN THE c programs this are given are in some order which cannot be changed and given …
PROCEDURE ORIENTED LANGUAGE :
IN the program we should follow some rules an regulations .such type of language is called as procedure oriented -(based )
that we call it as syntax / coding /grammar……
FREE FORM LANGUAGE : this program can be used in all type base as form of java ,c++
,flash….etc……
PROTOCOL TYPE LANGUAGE :
SAME AS THE THAT USED FOR ALL AREA …….
TOP DOWN APPROACH LANGUAGE :
all ways….. begins from the main function and ends with the “}”closing brazes ….
STRUCTURE OF C PROGRAM:
- DOCUMENTATION SECTION
- LINK SECTION
- MAIN SECTION
- DECLARATION PART
- EXECUTABLE PART
DOCUMENT SECTION:
this is the place where it ‘s for the understanding for users what they type there……
the eg:….
/*ADDITION*/= shows that this program is for addition this will not display in output /* */ this is called delimiters …
ADDITION is comment on program
LINK SECTION:
#include <stdio.h>
#include<conio.h>
# ==> pre processor directives contains pre defined function
include==> keyword used for including the properties or functions which is in the header files into program to its corresponding function
< > ==>link tag to form link between the program and the link section ..
.h===>extension for header files..
stdio.h==> standard input ,output header file.say to way printf (); and scanf();
conio.h==>common header file..say to way getch(); and clrscr();
main section:
every program begins from main function
main()
{
this area named scope
}
here main is called as function and not as keyword…….
DECLARATION PART :
this prat contains the variables and its corresponding data types which is to be displayed in the executable part .
eg:.. int a,b;
clrscr(); here a&b are variables and int is the integer data type.
EXECUTABLE PART:
the values which had been declared in the declaration part are executed in the executed in the executable part
eg:.. printf(“enter a & b values:”);
scanf(“%d%d”,&a,&b);
printf(“%d%d”,a,b);
getch();
}
here %===>conversion specification
d==>decimal converter
” ” ===> area in printf function is named as ->format string
” “==>area in scanf function is named as->control string..
,==> separation operator
;==>delimiters
MASK INVENTERS 