help me

[doubleZ]

I would like to know how to write a small function to get prime number , actually to check it .
thank U

[Devil Panther]

if i remember correctly, a prime number is a number that div only by itself and one...

int (int num) {
  if ((num==2)||(num==3)||(num==5)||(num==7)||((num%2)&&(num%3)&&(num%5)&&(num%7)))
  return(1); 
 else return(0);
}