Question

如何用python编程制作计算器

Answer 1

def cal():
numA = float(raw_input('Please enter a number: '))
op = raw_input('Please enter a operator: ')
numB = float(raw_input('Please enter another number: '))
if op == '+':
print "result: ",numA+numB
elif op == '-':
print "result: ",numA-numB
elif op == '*':
print "result: ",numA*numB
elif op == '/':
print "result: ",numA/numB
else:
print "Unknown operator ",op
cal()