Loops question

Question

tj=55
while tj>=0:
print("tj")
tj=tj-1
Output is tj 56 times
After that
print(tj)
Output is -1
why ❓

Answer 1

replace the tj>=0 with tj>0 to se if it outputs 0 instead of -1

its outpiting -1 because since its set to stop when it hits 0, when it hits 0 it, it runs once more setting it to -1.