Write a programme that does the following: identifies multiples of 2, 3 and 5 from an arbitrary set of input and computes the two most frequent groups of multiples.

bool isEven( int num ) 
{
  if( num % 2 == 0 )
  {
    cout << num << " is even ";
    return true;
  }
  return false;
}

if( IsEven( num ) ) 
{
  int num2 = num/2;
  isEven( num2 );
}

Quote:

i know how to find the LCM of the multiples of two or three numbers. what i dont know is how to get a list of the repeated or common multiples of the numbers in question

#include<conio.h>
void main()

{
int n1,n2,n3,n4,n5,n6;
int a,b,c,l,g,p,i;
int clrscr();
int q=1,ct=1,sum=0,n;

n1=1;
n2=100;
n3=1;
n4=120;
n5=1;
n6=100;

printf("Enter Three Integers and the upper Limit: \n"); /*ENTER THE THREE NUMBERS YOU WANT TO CALCULATE LCM AND THE UPPER LIMIT AT THE END*/
scanf("%d%d%d%d",&a,&b,&c,&n);
i=1;
 while(i<=a)
 {
 if(a%i==0&&b%i==0&&c%i==0)
 g=i;
 i++;
 }
 i=1;
 p=a*b*c;
  while(c<=p)
     {
     if(i%a==0&&i%b==0&&i%c==0)
     {
     l=i;
     break;
     }
     i++;
     }
      printf("\n");

while(n1<=n2)
{
if(n1%a==0)
printf("%d\t",n1);
n1=n1+1;
}
while(n3<=n4)
{
if(n3%b==0)
printf("%d\t",n3);
n3=n3+1;

}
while(n5<=n6)
{
if(n5%c==0)
printf("%d\t",n5);
n5=n5+1;

}
printf("\nWith Upper Limit of 100, The Two Most frequent multiples of %d, %d & %d are(is)...\n",a,b,c);
   while(q<=n)
    {
    if(q%a==0 && q%b==0 && q%c==0 )
     {
     printf("%d\t",q);
     ct++;
     sum=sum+q;
     }
    q++;
    }

    printf("\ncount=%d",ct);


getch();
}