diffrence between two numbers in an array
int lownum=0, highnum=0, diffrence=0,
arr[28,16,28,11,14,26,23,25,17,3,22,23,23,10];
for(int i=0, i<arr.lenght, i++){
if(lownum>arr[i]){
lownum=arr[i];
}if(highnum<arr[i]){
highnum=arr[i];
}
}diffrence = highnum - lownum;