Permutation of abc

#include <iostream>
using namespace std;

int main() {
    string ques = "abc";
    
    for(int i=0 ; i<ques.length(); i++){
        for(int j=0 ; j<ques.length(); j++){
                
                if(j==i){
                    continue;
                }
                
                for(int k=0 ; k<ques.length();k++){
                    if(k==i || k==j){
                        continue;
                    }
                    cout<<ques[i];
                    cout<<ques[j];
                    cout<<ques[k];
                    cout<<endl;
                }
            }
        }
    
    
   
    
    return 0;
}