Programming mistakes that will result in infinite loops.

Can somebody please list some common programming mistakes that will result in infinite loops, and also please explain why, thank you so much.

int loop_value
int last_value = 100
for ( loop_value = 0; loop_value < last_value) {
---------------
* If you should increment last_value here (or anywhere inside the loop),
'loop_value' will always be less than 'last_value' so it will never exit the
loop
---------------
}