分离表达式中的数字和运算符

#include<iostream>
using namespace std;
void sort(char b[],int n[],char fh[],int &m)
{
	int k,j;
	for(int i=0;i<strlen(b);i++)
	{
		if(b[i]=='+'||b[i]=='-'||b[i]=='*'||b[i]=='/'||b[i]==')')
		{
			k=1;
			j=i-1;
			while(1)
			{	
				if(isdigit(b[j]))
				{
					n[m]+=(b[j]-'0')*k;
					k*=10;
					j--;
				}
				else if(!isdigit(b[j])||j<0)
					break;
			}
			m++;
			fh[m]=b[i];
			m++;
		}
		else if(b[i]=='(')
		{
			fh[m]=b[i];
			m++;
		}
		else if(i==strlen(b)-1)
		{
			k=1;
			j=i;
			while(1)
			{	
				if(isdigit(b[j]))
				{
					n[m]+=(b[j]-'0')*k;
					k*=10;
					j--;
				}
				else if(!isdigit(b[j])||j<0)
					break;
			}
			m++;
		}
		
	}
}
void main()
{	
	char b[100];
	char fh[50]={0};
	int n[50]={0},m=0,i;
	cout<<"Please Input an expression"<<endl;
	cin>>b;
	sort(b,n,fh,m);
	for(i=0;i<m;i++)
	{
		if(fh[i]!=0)
			cout<<fh[i]<<" ";
	}
	cout<<endl;	
	for(i=0;i<m;i++)
	{
		if(n[i]!=0)
			cout<<n[i]<<" ";
	}
	cout<<endl;

}