how to change c program into c++ example plz?

#include<iostream.h>

int main()

{

int n=1, sum=0;

while(n<=10)

{

sum=sum+n;

n++;

}

cout << "The sum is : " << sum << endl;

return 0;

}

I can't understand why you have included conio.h.

Also if you are using Unix or Linux environment,,you can write the program as follows,to prevent warnings:

#include<iostream>

using namespace std;

int main()

{

int n=1, sum=0;

while(n<=10)

{

sum=sum+n;

n++;

}

cout << "The sum is : " << sum;

return 0;

}

Before changing ur program into C++ u should correct it! ur program doesn't work! u haven't use "i" at all and instead u have used "n" which is not declared anywhere! Your program should ask the user to enter desired "n" & use "i" as a counter. This is the right program:

#include<stdio.h>

void main()

{

int i=1,sum=0,n;

printf("please enter your number:");

scanf("%d",&n);

while (i<=n)

{

sum=sum+i;

i++;

}

printf("sum=%d",sum);

}

c++ adds to the c language, so what you have will already work with a c++ compiler. However, the standard for formatted text output in c++ is cout (or its companion cerr), so I would change that. I would also explicitly include the arguments to main to make it cross platform compatible.

#include <iostream>

using namespace std;

int main(int argc, char *argv[])

{

int i=1, sum=0;

while(n<=10)

sum=sum+n;

n++;

}

cout << "the sum is " << sum << endl;

return 0;

}

C++ is a super set of C

hence it can handle ur c program

if u want it to be true C++,

use #include<iostream.h> instead of #include<stdio.h>

then use, cin and cout instead of printf and scanf

#include<iostream.h>

#include<conio.h>

void main()

{

int sum=0,n=0;

clrscr();

while(n<=10)

{

sum=sum+n;

n++;

}

cout<<"the sum is "<<sum;

getch();

}

#include <iostream>

The following is the usual first C++ program (hello world type) when you begin, if you compare that with the usual C one it will give an idea of some differences (of which there are many). Good luck and bon voyage!

// function main begins program execution

int main()

{

std::cout << "Welcome to C++!\n";

return 0; // indicate that program ended successfully

} // end function main

#include<iostream.h>

#include<conio.h>

void main()

{

int i=1,sum=0;

while(n<=10)

{

sum=sum+n;

n++;

}

cout<<"The sum is "<<sum;

}

(note..u have made a mistake is braces..this will work)

dear c++ is classbase language.

so u had define right libraries but it can't support ,printf,scanf function it support cin>>, and cout<<.

and another thing c++ is modular programming all function has it's own duty

like printf ,scanf and more, they define as different function....

you will find everything here. http://bit.ly/1A3KcMZ