I don't get what is wrong with my program

[NOSgraf]

So the exercise that i have wants me to find how many numbers are missing from the telephone number from 0 to 9 and which numbers are these.Also the telephone number cannot have more than 10 numbers. For example:
Input
3
0631562976
0426578943
0126456788
Output

2
4 8
1
1
2
3 9
The problem is i don't get why my program does not work properly.It seems fine to me and i think it should work.Is there something missing?

  #include <iostream>
#include <string>
#include <vector>
using namespace std;

int main()
{
int T;
cin >> T;
while (T--)
{
string s1;
cin >> s1;
vector<int>myvector;
for ( int  i = 0; i <= 9; i++)
{
    int  count  = 0;
    for ( int  j = 0; j < s1.size(); j++)
    {
        if ( i == s1[j])
        {
            break;
        }
        else
        {
           count++;
        }
        if ( count == s1.size())
        {
            myvector.push_back(i);
        }
        }
    }
    cout << myvector.size() << endl;
    for ( int  i = 0; i < myvector.size(); i++)
    {
        cout << myvector[i] << " ";
    }
    cout <<  endl;
}
    return 0;
}

[lastchance]

You are attempting to compare ints with chars on line 20. 5 is not the same as '5'. Change line 20 to
if ( i == s1[j] - '0' )
since (for example) '5' -'0' will give 5.

Your code is almost impossible to read because the indenting is inconsistent, and almost impossible to run because there are no prompts to input any data.

[NOSgraf]

οκ now i get it thank you. I thought the numbers in a string were supposed to be the same with normal numbers.