pub mod math{
pub fn factorial(mut num:u32)->u32{
for i in 1..num{
num=num*i;
}
num
}
pub fn percent(obt:f32,total:f32)->f32{
let per=obt*100.0/total;
per
}
}
pub mod isfunctions{
pub fn is_even(num:u32)->bool{
if num%2==0{
return true
}
return false
}
pub fn is_prime(num:u32)->bool{
let mut count=0;
for i in 1..num+1{
if num%i==0{
count=count+1;
}
}
if count==2{
return true;
}
false
}
}