Take only digit as input by scanf() and avoid sign

I want to take the following format of input using scanf() until EOF that will avoid '+' sing and store only integer value. input sample:

1+2+8 

output sample for the above input:

1 2 8

I wrote the following code for this:

 while(scanf("%d+",&tmp)) //here 'tmp' is int type variable
 {
    v.push_back(tmp);   //'v' is vector<int> type
 }

 for (int i = 0; i < v.size(); i++)
 {
    cout<<v[i]<<" ";
 }

unfortunately while loop works as a infinite loop.What will be the solution for this problem?