sort many string in alplabetic order

#include<bits/stdc++.h>

using namespace std;
int main()
{

    char str[5][20], t[20];
    int i, j;
    cout<<"Enter any five string (name) : \n";
    for(i=0; i<5; i++)
    {
        cin>>str[i];
    }
    for(i=1; i<5; i++)
    {
        for(j=1; j<5; j++)
        {
            if(strcmp(str[j-1], str[j])==1)
            {
                strcpy(t, str[j-1]);
                strcpy(str[j-1], str[j]);
                strcpy(str[j], t);
            }
        }
        cout<<endl;

    }
    cout<<endl<<"Strings (Names) in alphabetical order : \n";
    for(i=0; i<5; i++)
    {

        cout<<str[i]<<"\n";

    }
    return 0;
}