/C++/How to find total numbe of distinct characters in a string in c

How to find total numbe of distinct characters in a string in c

#include <iostream>
#include <algorithm>
using namespace std;

int main()
{
    string username;
    int count = 0;
    cin >> username;
    sort(username.begin(),username.end()); //for understanding purpose, i do it
    int slen = username.length();
    //cout << username << endl;
    for(int i = 0; i < slen; i++)
    {
        
            if(username[i] != username[i-1])
            {
                count++;
            }
        
    }
    
    cout << "Total number of distinct characters  :  " << count << endl;
    return 0;
}

Similar codes

0 vote121 views1 answer
Extra parameter in comparator function for sort
C++
0 vote114 views1 answer
Show mouse c++
C++
0 vote110 views2 answers
Get min and max element index from vector c++
C++
0 vote114 views1 answer
How to remove the % in zsh that show after running c++ file
C++
40 votes158 views6 answers
Hello world in cpp
C++
0 vote106 views1 answer
Kadane algorithm with negative numbers included as sum
C++
0 vote106 views1 answer
Initialize many variablles c++
C++
0 vote115 views1 answer
Find subarray sum in c++
C++
1 vote114 views4 answers
Return function in cpp
C++
0 vote122 views1 answer
C++ program to count number of characters of words in a file using stringstream
C++