HELP! sorting string alphabetically

[Rampie12]

I am trying to sort the strings in array 'city' in alphabetical order. I am also re-arranging the content in array 'zip' to match the sorted city array

void display(char city[][15],char zip[][15],int &amount){
    char *temp, *temp2;
    char *arrayCity[6],*arrayZip[6];

    for(int i=0; i<amount; i++){
        arrayCity[i]=city[i];
    }
    for(int i=0; i<amount; i++){
        arrayZip[i]=zip[i];
    }
    
    for(int j=0; j<amount; j++){
        if(strcmp(arrayCity[j],arrayCity[j+1])>0){
            temp=arrayCity[j];
            temp2=arrayZip[j];
            arrayCity[j]=arrayCity[j+1];
            arrayZip[j]=arrayZip[j+1];
            arrayCity[j+1]=temp;
            arrayZip[j+1]=temp2;
        }
    }
    
    for(int m=0; m<amount; m++){
        cout<<arrayCity[m]<<", "<<arrayZip[m]<<endl;
    }
}

[paulthepenguin]

http://mathbits.com/mathbits/compsci/arrays/Selection.htm