Conditional Loops and \Control Statements in C++ [Detailed] Beginners Guide

Why We Use Conditional loops and Control Statements in C++

For taking more then one value at the time we used loops

loops mean complete one clock in which we give values

They Are Three Types Of loops

(1)For Loop

(2)While Loop

(3) Do While Loop

For Loop

In which We Give the value and for taking many values once time we used for loop

For Example 

for(int i=0;i<=10;i++)

Complete Example of For Loop

#include<iostream.h>

#include<conio.h>

main()

{

int a[5];

for(int i=0;i<=9;i++)

{
cout<<"Plz Enter the Numbers";

cin>>a[i];

}

getch();

}

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WHILE LOOP EXAMPLE

#include<iostream.h>

#include<conio.h>

main()

{

int a=0;

while(a<5)

{ 

cout<<"The number is this"<<a;

a++;

}

getch();

}

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DO WHILE LOOP EXAMPLE

#include<iostream.h>

#include<conio.h>

main()

{

int a;

a=0;

do

{
cout<<"HELLO WORD\n";

}

while(x!=0);

getch();

}

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Graphics Programming in Dev C++ with Examples[Ultimate Guide]

HOW TO ADD Graphics IN TURBO C++

Graphics are basically the main requirement of any software bcz it become software user friendly

sample graphics program in dev c++

BY Adding Graphics The programs become Graphicaly user friendly and Every Person Easily Understand The Working Of Software

Graphics in C++ tutorials

In turboo c++ it is some difficulty to add the graphics bcz it is directly not proper work therefore First of All We open C disk then we open the turbo++ Then We Open Disk After this We Open The BGI folder Now We Copy all Files Of BGi folder And then paste all files to BIN Now Graphics Properly Link With Turboo c++ And After this you can easily work on graphics And Add Graphics To your software Or Programs

HOW TO Intialize Graphics in Turboo c++

First of All We Add The Graphics.h headrel File In the Programs

Graphics.h

Then We intialize the  Graphics Driver As

int gdriver=DETECT,gmod;

then we initialize the graphics as

initgraph(&gdriver,&gmod," ");

After this whatever you want to do  with graphics in programm you can do like as draw the line ,draw the circle ,draw the 3d bar .etc; 

After Doing Work with Graphics It is must that close the Graphics same as intialize the Graphics Now we can close graphics as 

closegraph();

SYNTAX OF GRAPHICS IN TURBOO C++

Int gdriver=DETECT,gmod;

initgraph(&gdriver,&gmod,"");

closegraph();

This is the syntax of  graphics used in turboo c++

Example of Graphics

#include<iostream.h>

#include<conio.h>

#include<graphics.h>

#include<stdio.h>

void main()

{

int gdriver=DETECT,gmod;

initgraph(&gdriver,&gmod,"");

clrscr();

setcolor(4);
settextstyle(4,0,5);
 settextjustify(LEFT_TEXT,RIGHT_TEXT);
outtextxy(40,3,"Ticket Management System");
settextstyle(7,0,3);
 settextjustify(LEFT_TEXT,RIGHT_TEXT);
outtextxy(145,80,"1:-For New Passenger");
settextstyle(7,0,3);
 settextjustify(LEFT_TEXT,RIGHT_TEXT);
outtextxy(145,110,"2:-Display All Passenger");
outtextxy(145,140,"3:-Search By Ticket ID");
    outtextxy(145,170,"4:-Search ByName Passenger");
outtextxy(145,170,"4:-Delete Ticket");
outtextxy(145,200,"5:-Exit");
                 rectangle(40,65,550,300);
                closegraph();
}
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Latest Guide -- IF Else Statements in C++ With Examples For Beginners 2019

Conditional Statements

In many program's we required conditions to make the program accurate and as customer want therefore we used the condition statements 

They Are Many Conditional Statements Like As

If Statement

Else Statement

Else If Statement


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If Statement

IF Statement is the conditional statement and it is used in program when we need to put some condition or to put some limits To any Variable 

Syntax of if statement 

If (give the condition)

{

}

if else statements c++ examples

For Example 

We write A programm In which We Take The Marks From User And Then if user Enterd Marks b/w 80 -90 then programm print the Grade A????

_________________________

In this programm we used if condional statement for  Marks Grading

we Do  simple  in this programm As mentioned below

if (marks >80&&marks<=90)

{

cout<<"The grade is A";

}

Complete Example with Implementation In C++

#include<conio.h>

#include<iostream.h>

main()

{

int marks;

cout<<"Plz Enter the marks";

cin>>marks;

if(marks>80&&marks<=90)

{

cout<<"The Grade Is A";

}

getch();

}
If else statements c++ examples

ELSE STATMENT

It is also Conditional Statement But its work opposite to if statement (Bcz If Statement not true in programm then the 2nd condition will be write in else and then 2nd case mean else statement work 

Syntax of else 

if (condition)

{

}

else

{

 }

Example of If -Else Program

We write A programm In which We Take The Marks From User And Then if user Entered Marks b/w 80 -90 then programm print the Grade A  If entered Wrong Marks Then Print Student Is Fail????

_________________________

In this programm we used if condional statement for  Marks Grading

Esle Condition for Student is fail if if condition not true then else condition run

we Do  simple  in this programm As mentioned below

if (marks >80&&marks<=90)

{

cout<<"The grade is A";

}

else

cout<<"The Student Is fail"

Complete Example with Implementation In C++

#include<conio.h>

#include<iostream.h>

main()

{

int marks;

cout<<"Plz Enter the marks";

cin>>marks;

if(marks>80&&marks<=90)

{

cout<<"The Grade Is A";

}

else

cout<<"The Student is Fail";

getch();

}

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                     *************************

How To Apply Different types of Validations In C++ Programms

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Validation of Mobile Number

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we can do the validation of mobile number by using string length comparison

In Some Software's Number validation is must bcz when users entered the Mobile Number.           It can me wrong ,it can be short and it can also lengthy ( After getting the applicant number if need to contact the person the contact address may be short number may be long 

Therefore In some software's Validation Of Contact number Is Compulsory 

It Is the key of validation of Mobile Number

   while(strlen(contact)>11||strlen(contact)<11)

complete Example of Contact No Validation

#include<conio.h>
#include<iostream.h>
main()
{
char contact [25];
cout<<"\n\tEnter The Contact Number:-";
cin>>contact;
while(!cin)
{
cin.clear();
cin.ignore();
cin>>contact;
}
while(strlen(contact)>11||strlen(contact)<11)
{
 cout<<"\n\tInvalid contact number\n\tEnetr valid number -:";
 cin>>contact;
         getch();
 }

Validation of  NIC NUMBER

For Example (issuing of Sim ) (For Job Application) ;etc
Same case here as in Contact number validation
   while(strlen(nic)>13||strlen(nic)<13)

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complete Example of Nic No Validation
#include<iostream.h>
main()
{
char nic [25];
cout<<"\n\tEnter The Nic Number:-";
cin>>nic;
while(!cin)
{
cin.clear();
cin.ignore();
cin>>nic;
}
while(strlen(nic)>13||strlen(contact)<13)
{
 cout<<"\n\tInvalid  Nic number\n\tEnetr valid number -:";
 cin>>nic;
         getch();
 }
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How to Apply Input Validation In C++ Programs [Ultimate Guide] 2019

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The Process In which We put the validation in any software 

By Input Validation Mean Put the limitations in any software or programm

Why We Use Input Validation In C++

By Using Input validation our programm or software can make valueable Bcz By using Validation In Software the Software give or take the accurates values or things

For Examples 
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We Make the  Student Management System Software in which we put the name age class date of birth :etc,

Input validation mean programm accept only value or data type  which we give 

For  Example :

we Take int id then c++ programm accept only integer type :

If we give character for id then Programm Not Accept this Data

(With out input validation)

char name ;

int birth;

We entered the name: 45

we entered the birth date :Ali 
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(With Input Validation)

Int birth;

char name;

int age;

cout<<"Plz Enter the Name ";

cin>>name;

while(!cin)

{

cout<<"Plz Enter the Name";

cin>>name;

}

cout<<"Plz Enter the Age " ;

cin>>age;

if(age>1&&age<=100)

{

}

else

cout<<"Plz Enter the Age";

cin>>age;

if(age>1&&age<=100)

{

cout<<"Age correct";

}

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Complete Example of Input Validation In C++

#include<conio.h>

#include<iostream.h>

 void main()

{

int id;

char name;

int age;

cout<<"Plz Enter the Id";

cin>>id;

while(!cin)

{

cout<<"Plz Enter the ID";

cin>> id;

}

cout<<"Plz Enter The name ";

cin>>name;

while(!cin)

{

cout<<"Plz Enter the Correct Name";

cin>>name;

}

cout<<"Plz Enter the Age";

cin>age;

if(age>0&&age<=100)

{

cout<<"Plz Enter The Age";

cin>>age;

}

getch();

}

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File Handling in c++ Programs Using Class[Latest ] Beginners Guide

What Is File Handling

The process in which we can save the entered data permanent on disk in the form of files it is known as file handling 

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They are two types of files in which we can do file handling

1:- Binary files

2:- Txt files

Binary files 

In this form of file handling we can store data and  benefit is that data will be stored as unseen character which is not seen and only numeric number will be seen and extenion of binary file is .dat

Txt files

In this form of files data will be shown easily in files 

In this form we can see all characters in files 

Critically Differentiate B/w Binary Files And Text Files

In binary files data can be consist of unread characters and only numeric data will be read

In txt files all data consist of readable character In text files we can easily read data in files

Explanation

For storing the data on disk in form of file we use the headrel File 

#include<fstream.h>

for only  writing data in file

we used ofstream

For only reading data from file

we used ifstream

And For Both Read and Write data in files we used

fstream

Example of File Handling (Writing Data )

#include<iostream.h>

#include<conio.h>

#include<fstream.h>

void main ()

{

int a;

char b;

cout<<"Plz Enter the Name";

cin>>b;

cout<<"Plz Enter the Age";

cin>>a;

ofstream f;

f.open("ali.txt",ios::app|ios::ate);

f<<a;

f<<b;

getch();

}

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