This project is about to find the Highest Common Factor(HCF) or Least Common Multiplication(LCM).You should give the input for finding the hcf or lcm and it gives the output.
#include
#include
void main()
{
int n,a[5],i,j,op,c,t;
long int x,k;
clrscr();
printf("\n\nEnter how many numbers:\t");
scanf("%d",&n);
for(i=0;i<5;i++)
a[i]=0;
printf("\n\nEnter the numbers one by one:\n");
for(i=0;i scanf("%d",&a[i]);
do
{
printf("\n\nChoose:\n\n1.HCF\n\n2.LCM\n\n3.Exit\n\nEnter your option:\t");
scanf("%d",&op);
switch(op)
{
case 1:
t=a[0];
for(i=1;i if(t>a[i])
t=a[i];
for(i=t;i>0;i--)
{
c=0;
if(t%i==0)
{
for(j=0;j {
if(a[j]%i==0)
c=1;
else
{
c=0;
break;
}
}
}
if(c==1)
{
printf("\n\nHCF : %d",i);
break;
}
}
break;
case 2:
x=1;
for(i=0;i x=x*a[i];
t=a[0];
for(i=1;i if(t t=a[i];
for(k=t;k<=x;k++)
{
c=0;
if(k%t==0)
{
for(j=0;j {
if(k%a[j]==0)
c=1;
else
{
c=0;
break;
}
}
}
if(c==1)
{
printf("\n\nLCM : %ld",k);
break;
}
}
break;
}
}while(op!=3);
getch();
}
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