YouTipPython Exercise Example15
# Python2.x Python Exercise Instance 15
[ Python 100 Examples](#)
**Question:** Use nested conditional operators to complete this problem: students with academic scores >= 90 are represented by A, those between 60-89 are represented by B, and those below 60 are represented by C.
**Program Analysis:** Program Analysis: (a>b) ? a:b is a basic example of a conditional operator.
Program source code:
## Instance (Python 2.x)
```python
#!/usr/bin/python
# -*- coding: UTF-8 -*-
score = int(raw_input('Enter score:n'))
if score>= 90:
grade = 'A'
elif score>= 60:
grade = 'B'
else:
grade = 'C'
print '%d Belongs to %s' % (score,grade)
## Instance (Python 3.x)
```python