O dah dah PE

#include<bits/stdc++.h>
#include<string>
using namespace std;

int main()
{
    string a,x;
    int n,ln,spc,cnt,cn;
    cin>>n;
    int j,i=0,k,l,z;
    getchar();
    while(n--){
        i++;
        getline(cin, a);
        ln=a.size();
        a.insert(a.end(),1,' ');
        k=0;
        ln=a.size();
        cout<<"Message #"<<i<<endl;
        spc=0;
        cnt=0;
        cn=0;
        for(j=0;j<ln;j++){
            if(a[j]==' ' && a[j-1]==' '){
                if(cnt>0 && spc==0)
                    cout<<" ";
                k++;
                spc++;
                continue;
            }
            if(cn==0 && a[j]!=' '){
                k=j;
                cn++;
            }
            if(a[j]==' ' && cn>0 ){
                l=j-k;
                x.append(a,k,l);
                if(x.compare(".-")==0)
                    cout<<"A";
                else if(x.compare("-...")==0)
                    cout<<"B";
                else if(x.compare("-.-.")==0)
                    cout<<"C";
                else if(x.compare("-..")==0)
                    cout<<"D";
                else if(x.compare(".")==0)
                    cout<<"E";
                else if(x.compare("..-.")==0)
                    cout<<"F";
                else if(x.compare("--.")==0)
                    cout<<"G";
                else if(x.compare("....")==0)
                    cout<<"H";
                else if(x.compare("..")==0)
                    cout<<"I";
                else if(x.compare(".---")==0)
                    cout<<"J";
                else if(x.compare("-.-")==0)
                    cout<<"K";
                else if(x.compare(".-..")==0)
                    cout<<"L";
                else if(x.compare("--")==0)
                    cout<<"M";
                else if(x.compare("-.")==0)
                    cout<<"N";
                else if(x.compare("---")==0)
                    cout<<"O";
                else if(x.compare(".--.")==0)
                    cout<<"P";
                else if(x.compare("--.-")==0)
                    cout<<"Q";
                else if(x.compare(".-.")==0)
                    cout<<"R";
                else if(x.compare("...")==0)
                    cout<<"S";
                else if(x.compare("-")==0)
                    cout<<"T";
                else if(x.compare("..-")==0)
                    cout<<"U";
                else if(x.compare("...-")==0)
                    cout<<"V";
                else if(x.compare(".--")==0)
                    cout<<"W";
                else if(x.compare("-..-")==0)
                    cout<<"X";
                else if(x.compare("-.--")==0)
                    cout<<"Y";
                else if(x.compare("--..")==0)
                    cout<<"Z";
                else if(x.compare("-----")==0)
                    cout<<"0";
                else if(x.compare(".----")==0)
                    cout<<"1";
                else if(x.compare("..---")==0)
                    cout<<"2";
                else if(x.compare("...--")==0)
                    cout<<"3";
                else if(x.compare("....-")==0)
                    cout<<"4";
                else if(x.compare(".....")==0)
                    cout<<"5";
                else if(x.compare("-....")==0)
                    cout<<"6";
                else if(x.compare("--...")==0)
                    cout<<"7";
                else if(x.compare("---..")==0)
                    cout<<"8";
                else if(x.compare("----.")==0)
                    cout<<"9";
                else if(x.compare(".-.-.-")==0)
                    cout<<".";
                else if(x.compare("--..--")==0)
                    cout<<",";
                else if(x.compare("..--..")==0)
                    cout<<"?";
                else if(x.compare(".----.")==0)
                    cout<<"'";
                else if(x.compare("-.-.--")==0)
                    cout<<"!";
                else if(x.compare("-..-.")==0)
                    cout<<"/";
                else if(x.compare("-.--.")==0)
                    cout<<"(";
                else if(x.compare("-.--.-")==0)
                    cout<<")";
                else if(x.compare(".-...")==0)
                    cout<<"&";
                else if(x.compare("---...")==0)
                    cout<<":";
                else if(x.compare("-.-.-.")==0)
                    cout<<";";
                else if(x.compare("-...-")==0)
                    cout<<"=";
                else if(x.compare(".-.-.")==0)
                    cout<<"+";
                else if(x.compare("-....-")==0)
                    cout<<"-";
                else if(x.compare("..--.-")==0)
                    cout<<"_";
                else if(x.compare(".-..-.")==0){
                    char w='"';
                    cout<<w;
                }
                else if(x.compare(".--.-.")==0)
                    cout<<"@";
                k=j+1;
                cnt++;
                spc=0;
                x.clear();
            }
        }
        cout<<endl;
        if(n)
            cout<<endl;
    }
    return 0;
}