Evaluation of simple arithmetic expressions

#include <stdio.h>#include<string.h>intMain () {intN,i; Chara[ $]; intf=0, l=0;    Gets (a);  for(i=0; I<strlen (a); i++)    {        if(a[i]>='0'&&a[i]<='9')//if it's a number        {            if(a[i+1]>='0'&&a[i+1]<='9')//If the back is a number ,{f= (f+a[i]- -)*Ten;//into a number forward into a            }            Else//Otherwise, it is a space, what is stored directly as a number{f=f+a[i]- -;  Break; }        }    }      for(I=strlen (a);i>0; i--)//second two-digit number    {        if(a[i]>='0'&&a[i]<='9')//if it's a number        {            if(a[i-1]>='0'&&a[i-1]<='9')//If the front one is a number ,{L=l+a[i]- -; }            Else//Otherwise, it is a space, what is stored directly as a number{L=l+ (a[i]- -)*Ten;//into a number forward into a                 Break; }                                             /*35+14*/        }     }     for(i=0; I<strlen (a); i++)    {        if(a[i]=='+') printf ("%d\n", f+l); Else if(a[i]=='-') printf ("%d\n", F-l); Else if(a[i]=='*') printf ("%d\n", f*l); Else if(a[i]=='/') printf ("%d\n", f/l); Else if(a[i]=='%') printf ("%d\n", f%l); }     return 0;}

01: Evaluation of simple arithmetic expressions

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Total time limit:

1000ms

Memory Limit:

65536kB

Describe

Simple arithmetic operations of two-bit positive integers (only integer operations are considered), arithmetic operations are:

+, addition operation;
-, subtraction operations;
*, multiplication operation;
/, integer division operation;
%, take the remainder operation.

The arithmetic expression is in the format (there may be spaces before and after the operator):
Arithmetic operators for arithmetic operations

Please output the corresponding results.

Input

An arithmetic expression of one line.

Output

The result of an integer arithmetic operation (the result value is not necessarily a 2-bit number, possibly more than 2 bits or less than 2 bits).

Sample input

32+64

Sample output

96

Original title: http://noi.openjudge.cn/ch0112/01/

Evaluation of simple arithmetic expressions