Problem:

Simple Calculator

Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.

The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.

Input

The input consists of multiple datasets. Each dataset is given in the following format.

a op b

The input ends with a dataset where op = '?'. Your program should not process for this dataset.

Output

For each dataset, print the value in a line.

Constraints

  
 0 ≤ a, b ≤ 20000

No divisions by zero are given.

Sample Input 1

1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0

Sample Output 1

3
38
26
10
108



Sample input:
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0


Sample output:
3
38
26
10
108

Submission status: Runtime Error

Solution code:
while True:
 a,op,b=raw_input().split()
 if op=="?":break
 if op=="+":print int(a)+int(b)
 if op=="-":print int(a)-int(b)
 if op=="*":print int(a)int(b)
 if op=="/":print int(a)/int(b)

Submission status: WA: Presentation Error

Solution code:
# coding: utf-8
# Here your code !

def func():
    result=""
    while(True):
        try:
            line = input().rstrip()
            elements = line.split(" ")
            elements[0] = int(elements[0])
            elements[2] = int(elements[2])
        except:
            print("input error")
            return -1
        
        operator=elements[1]
        if(operator == "+"):
            result+=str(elements[0]+elements[2])+"\n"
        elif(operator == "-"):
            result+=str(elements[0]-elements[2])+"\n"
        elif(operator == "*"):
            result+=str(elements[0]*elements[2])+"\n"
        elif(operator == "/"):
            result+=str(elements[0]//elements[2])+"\n"
        elif(operator == "?"):
            result.rstrip()
            break
        else:
            print("input error")
            return -1
        
    print(result)

func()

Submission status: WA: Presentation Error

Solution code:
#!/usr/bin/python

import sys

equation = raw_input().split(" ")

a = int(equation[0])
b = int(equation[2])
mark = equation[1]

if mark == "?":
  sys.exit()
elif mark == "+":
  print str(a+b) + "\n"
elif mark == "-":
  print str(a-b) + "\n"
elif mark == "*":
  print str(a*b) + "\n"
elif mark == "/":
  print str(a/b) + "\n"

sys.exit()