An integer (never a fraction) that can be divided exactly by 2. For example, 10 is an even number, i.e., 10 % 2 = 0.
Note: % is a Modulus (Division Remainder) operator, it finds the remainder after division of one number by another. Please check our Arithmetic Operators for more details.
In the following example, we will find all the Even Numbers between 10 and 25 using for loop.
Example
C++ Compiler
#include<iostream>using namespace std;
int main()
{
int start =10;
int end =25;
cout <<"Even numbers between "<< start <<" and "<< end <<":\n";
for(start=start; start<=end; start++)
{
if(start %2==0)
cout << start <<" ";
}
return0;
}
Output
Even numbers between 10 and 25:
10 12 14 16 18 20 22 24
Using While Loop
In the following example, we will find all the Even Numbers between 10 and 25 using while loop.
Example
C++ Compiler
#include<iostream>using namespace std;
int main()
{
int start =10;
int end =25;
cout <<"Even numbers between "<< start <<" and "<< end <<":\n";
while(start <= end)
{
if(start %2==0)
cout << start <<" ";
start++;
}
return0;
}
Output
Even numbers between 10 and 25:
10 12 14 16 18 20 22 24
Using do while Loop
In the following example, we will find all the Even Numbers between 10 and 25 using do while loop.
Example
C++ Compiler
#include<iostream>using namespace std;
int main()
{
int start =10;
int end =25;
cout <<"Even numbers between "<< start <<" and "<< end <<":\n";
do{
if(start %2==0)
cout << start <<" ";
start++;
}while(start <= end);
return0;
}
Output
Even numbers between 10 and 25:
10 12 14 16 18 20 22 24
Even Numbers between any Given Range
In the following example, we will find all the Even numbers between any given range.
Example
C++ Compiler
#include<iostream>using namespace std;
int main()
{
int start, end;
cout <<"Enter a (int) starting number: ";
cin >> start;
cout <<"Enter an (int) ending number: ";
cin >> end;
cout <<"\nEven numbers between "<< start <<" and "<< end <<":\n";
for(start=start; start<=end; start++)
{
if(start %2==0)
cout << start <<" ";
}
return0;
}
Output
Enter a (int) starting number: 5
Enter an (int) ending number: 10
Even numbers between 5 and 10:
6 8 10
Check Whether the Given Number is Even or Odd
In the following example, we will check whether the given number is an Even number or Odd number.
Example
C++ Compiler
#include<iostream>using namespace std;
int main()
{
int num;
cout <<"Enter a (int) number: ";
cin >> num;
if(num %2==0)
cout << num <<" is an even number";
else
cout << num <<" is an odd number";
return0;
}
Output
Enter a (int) number: 16
16 is an even number
Reminder
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