/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 vote108 views1 answer
What is stdarg.h used for
C++
1 vote103 views1 answer
Arduino notone
C++
-1 vote97 views1 answer
How to initialize static member variable of a class in c++
C++
0 vote105 views1 answer
How to show constellations in starry night orion special edition
C++
1 vote123 views1 answer
Priority queue ordered by second element
C++
1 vote131 views1 answer
Uri online judge 1930 solution in c++
C++
2 votes103 views1 answer
Retu7rn this c++
C++
0 vote102 views1 answer
Import matrix from excel to matlab
C++
0 vote108 views1 answer
Batch to exe
C++
0 vote96 views1 answer
Bitwise operator in C++ example programs
C++