C / C++ / MFC

rajugis wrote:

Getpixel and setpixel methods are too slow

rajugis wrote:

and plz give me one samples

UKM_Student wrote:

Im currently writing a program which prompts the computer to calculate the sum of even integers between 2 numbers,namely Number_1 and Number_2.Anyone can help me with this?

cin>>firstNum;
cin>>secondNum;
cout<<"c. The total sum of even integers between "<<firstNum<<" and "<<secondNum<<" is : ";

int total=0;
while( firstNum < secondNum )
{
	if( 0 == firstNum%2 )
	{
		total += firstNum;
	}
	firstNum++;
}
cout<<total;

#include <iostream>
using namespace std;
int main()
{
  int firstNum = 2, secondNum = 10;
  int k;
  
  int total = 0;
  k = firstNum + 1;
  if (k % 2 == 1) k++;
  while (k < secondNum)
  {
    total = total + k;
    k += 2;
  }
  cout << "c. The total sum of even integers between " << firstNum << " and " << secondNum << " is : " << total;
}

UKM_Student wrote:

if (k % 2 == 1) k++;???

UKM_Student wrote:

And i thought that "if statement" needs to be paired with an "else"?

#include <iostream>
using namespace std;
int main()
{
  int i;
  for (i=1; i<=10; i++)
  {
    cout.width(8);
    cout <<  i;
    cout.width(8);
    cout << i*i << endl;
  }
}