Frequency Of A Number

#include
#include
void main()
{
int i,n,d,count=0;
clrscr();
printf("Enter The Number:");
scanf("%d",&n);
printf("\nEnter The Number To Be Searched:");
scanf("%d",&i);
while(n!=0)
{
d=n%10;
if(d==i)
count++;
n=n/10;

}
if(count>0)
printf("\nThe Frequency Is:%d",count);
else
printf("Number Not Found");
getch();
}

Binary To Decimal

#include
#include
#include
void main()
{
int n,i,d,sum=0;
clrscr();
printf("Enter a Number:");
scanf("%d",&n);
for(i=1;n!=0;i++)
{
d=n%10;
sum=sum+(pow(2,i)*d);
n=n/10;
}
printf("Num Is:%d",sum);
getch();
}