c language is structured programming language

8/8/2019 C Language is Structured Programming Language

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Structured programmer language C

C language is structured programming language. Its a case sensitive language before

it was called as B, Basic Compiled Programming language. In this language we are using

compiler to execute. The complier name is TC (turbo C).

Parts of the program In C language

1. declarations2. input statements3. Arithmetic and logical works4. Output statementsFunctions

Header file Library File

Standard input output , header file (

stdio.h

( conioh ( console input , output) Get CH

It helps to execute

Graphic .h

void main()

Void main ()

{

Variable Declaration

Input

Calculation

Output

}

Functions

{

}

{} set brackets

[] square bracket

Main c

Note: single has comment //

Main C

(file Name )

Compiler

Main.obj

Main.bak

Main.exe

Main.C ( souce


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Clrscr ();

Printf (enter the integer value \n);

Scanf (%d, &a);

Printf (the given integer value is %d,a);

Getch ();

}

Write a C program to read a float value and display?

#include

#include

Void main()

{

Float a;

Clrscrn();

Printf(float value \n);

Scanf(%f,&a);

Printf(the given float is %f,a);

Getch();

}

Error names: statement missingIt to programmer, there was a mistaken from the previous line that is , we miss

the semi colon from the previous line .

Undefined symbols: the compiler does not understand your variable names in the

program. All the variables must be declared before it has used. Sometimes we

use Printf instead of printf

Unable to open OBJ file, linker, library, output directory path was not set

properly

//program for float value and fixed ()

#include

#includeVoid main ()

{

Float a1,a2,a3;

Clrsrn

Prinf(enter the decimal vale\n);

Scanf(%f%f,&a1,&a2);

A3+a1+a2;

Peintf(the amount of %.2f,a3)

Getch()

}

Read the employee salary, traveling allowance and medical allowance

//progarme for employee salry ()#include

#include

Void main ()

{

Float e,t,m;

Clrsrn

Prinf(enter the decimal vale\n);

Scanf(%f%f%f,&e,&t,&m);


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A1= e+t+m;

Peintf(the amount of %.2fa1,)

Getch()

String :

//read a string and display ()

#include

#include

Void main ()

{

Char x[20];

Clrscr();

Printf(enter the string\n);

Scanf(%s,&x);

Printf(\n the given string is %s,x);

Getch;

}

Wrte a progarme fro emplee id , name , address, salary and

do the following calculationTA( traveling allowance ) salary *7 /100

Ma ( medical allowance ) sa;ry *9/100

Hra salary +10/100

Fa( food allawnace ) salry * 11/100

Loan =salry *1/100

Gross =salry +ta+ma+hra+fa

Net=gross-loan

//progarme for employee salry ()

#include#include

Void main ()

{

Int a; //emplee id

Char x[20],y[20]

Float b,ta,ma,hra,fa,oan,gross,net;

Clrscr();

Printf( \n enter the emplee id);

Scanf(\n %d,&a)

Printf( \n enter the name);

Scanf(\n %s,&x)

Printf( \n enter the address);

Scanf(\n %s,&y)Printf( \n enter the salary);

Scanf(\n %f,&b)

Ta=b*7/100

Ma=b*9/100

Hra=b*10/100

Fa=b*11/100

Loan=b*1/100

Gross=b+ta+ma+hra+fa


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Net=gross-loan

Printf( \n the amount of ta %f,ta);

Printf( \n the amount of ma %f,ma);

Printf( \n the amount of hra %f,hra);

Printf( \n the amount of fa %f,fa);

Printf( \n the amount of loan %f,loan);

Printf( \n the amount of gross %f,gross);

Printf( \n the amount of net %f,net);

Getch();

}

Write a progarme fro simple interest and display

it?SI =PRN

/* this is my thired programe

date 04/04/2010*/

//#include /headerfile//#include

void main()

{

float si,p,r,n;

clrscr();

printf("\n enter the principle amount");

scanf("\n %f",&p);

printf("\n enter the rate of interest");

scanf("\n%f",&r);

printf("\n enter the number of years");

scanf("\n%f",&n);

si=p*r*n/100;

printf("\n simple amount is %.2f",si);

getch();

}

Write A C PROGARME TO READ A DOLLEER VALUE AND CONVERTION INTO THE RUFIYAA

VALUE

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Incremnet and decremenets

These methods are used when in looping

Incremnet = post incerment and pre incremnet

Decermenet = post decrement and pre decremenet

Pre incremnet : ++IThe value of the varibele I is inceremeneted by one , then it will used by

another varibles .

Exmaple x = 100


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A =++x

In this case the value of the varible x is incremnetd from 100 to 101 then

its been asssign to a

Post increment : I++The value of the varible I is assgin to another varible first then it will be

incremneted by oneExample

X=100

A=X++

out put is A =100

X =101

Because x is assgin frist , aftre assgning it been incremneted

/* this is 5th programe

date 20/04/2010*/

//#include /headerfile

//#includevoid main()

{Int x, y;

Clrscr;

X=100,

Y=++x

Printf(value of x is %d\n,x),

Prinf( the value of y is %d\n,y),

getch();

}

-----------------------------------------------------------------------------/* this is 6th programe

date 20/04/2010*/


//#include

void main()

{Int x, y;

Clrscr;

X=100,

Y=x--

Printf(value of x is %d\n,x),

Prinf( the value of y is %d\n,y),

getch();

}

----------------------------------------------------------------------------


date 20/04/2010*/


//#include

void main()

{


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Int x;

Float b;

Char c;

Clrscr;

Printf(enter the value of interger %d\n,x);

scanf(%d,&a);

printf(vaue of x is float\n,x);

scanf(%f,&b,b);

printf(value of x is charcater\n,x);

scanf( %c,&c);

printf (values are fllows)

printf(%d\t%f\t%c)

getch();

}

Diffrence between character and string

charcterconstant String constantChar optionOption-y;Char symbolesSymbles=#

----------------------------------------------------------------------------


date 25/04/2010*/

#include /headerfile

#include

void main()

{Int year , reminder;

Clrscr();

Printf(enter the year\n);

Scanf (%d,&year):

Reminder=year%4;

IF(reminder==0)

Printf(year %d is leap year,year);

Else

Printf(year %d is not a leap year,year);


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Getch();

}

----------------------------------------------------------------------------

/* this is 9th programedate 25/04/2010*/

#include /headerfile

#include

void main()

{Int m1,m2,m3,m4,total

Float arg;

Char name[20] *grade{10},

Clrscrn;

Printf( \n enter the name:\t);

Scanf( %s,&name);

Printf()

Switch case

Its a multi branching control statement

General format

Switch(condition)

{

Case value:

-----------------------------------------------------------------------------------\--

-------------------------------------------------------------------------------------

Break;

Case value2:

Break;

Case value3:


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Break;

Default:

Break;

In switch case there many available cases. In case consider as branch. The switch

condition has to be evaluated at first.

The switch condition value compare with case values. Which case value is match with

switch condition value that specific case will be executed

If there is no match found the control will go to default branch.

Note: every case have break statement. When the control comes to break statement, the

switch case will be terminated

Ex: char value;

Value =a,

Switch(value)

{

Casea

Printf(the letter a aplhepet a);

Break;

Casee

Printf(the letter is alpaheebt e);

Break;

Default:

Printf(no value match);


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Break;

#include

#inculde

void main()

{

char option;

clrscr();

printf("enter a letter \n");

scanf(" %c",&option);

printf("the given letter is %c \n",option);

switch(option)

{

case'a':

case'A':

case'e':

case'E':

case'i':

case'I':

case'o':

case'O':

case'u':

case'U':

printf("the letter is a vowel");

break;

default;

printf("this is not a vowel");

}

getch();

}


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#include

#inculde

void main()

{

int a,b,c,option

clrscr();

printf("\n\t\t menu\n\n");

printf("\t\t 1.....add\n");

printf("\t\t 2.....sub\n");

printf("\t\t 3.....mulit\n");

printf("\t\t 4.....division\n");

printf("\t\t 5.....close\n");

printf("\n select your choice\t");

scanf("%d,&option");

printf("enter two number\n");

scanf("%d%d",&a,&b);

switch(option)

{

case1:

c=a+b;

break;

case2:

c=a-b;

break;

case3:

c=a*b;

break;

case4:

if (b==0||b,0)


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printf("deiviosn not possible");

if(b.0)

c=a/b;

default:

printf("select proper option\n");

break;

}

print("result is %d",c)

getch();

}

Itrative statement

1. Do loop2.While loop3. For loop

Part of Itertive statement

a. Intailizeb. Incerment/decrementsc. Condition

Do loop

General format

Initail Value

Do

{

Incremnet or dercremnet

}

While (lgigal condition)


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EXCESIE 1

N=1;

Do

{

Printf{welcome};

N=n+1;

}

While (n


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{

printf("my name is %s\n"*name);

i=i+1;

}

while(i


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Write a c-progarme to display your name in n using for loop

#include

#include

void main()

{

int n,i,total,a[100];

clrscr();

printf("how many time you wnat to entrer");

scanf("%d",&n);

printf("enter the number one by one\n");

for(i=0;i


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2.Array=> many data stored at one variable3.Structure =>different type as data (disimialr type of data)

can store in one variable name

How gto declare

General format

Struct structure name

{

Int id

Float salary

Char // these are structure number

};

Struct structure name variable name;

File concept

How to declare

1.Declare the file pointer variablesFILE *FP

Data type file pointer

2.The text file should be opned using file pointer and filemode( file mode means to write and read purpose)

There are three file mode

Write : it

Read: it just read

Append

File =fopen( ab1.txt, w+)


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#include

#include

void main()

{

struct student

{

int id;

float m1,mt,m3,tot;

char name[20];

struct student s;

file *fp;

int recsize;char option;

clrscr;

fp=fopen(stud.txt,w+);

recsize=sizeof(s);

do

{

Clrscr

Printf(enter the id \t);scanf(%d,&s.id);

Fwrite(&s,recsize,1,fp);

Printf(do u want to add another recosrd);

Sacnf(%c,&option

}


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While ( option==y);

Getch()

}

String fuction

Its is a collection of Alpha and neumericals and symbols

How to declare string variable

Char varibelname [size];

Example char a [100];

a= the variable

100= the size of variable

The format specifer for string is %s

#include

Strlen(string);


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c language is structured programming language

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