Program to Find Prime Number in C from 1 to 100

1.)Program to findout all Prime Number between 1 to 100.

void main()
{
int i,num=1;
clrscr();

while(num<=100)
{
i=2;
while(i<=num)
{
if(num%i==0)
break;
i++;
}
if(i==num)
printf("\n%d is Prime",num);
num++;
}
getch();
}