The char, string thing

[RenderedAwake]

Im trying to familiarize myself with the string thing, char, comparing strings, ect. by writing a program that allows a user to play rock paper scissors against a computer who obviously is going to choose randomly...so my original goal was to code this game in the fewest lines of code possible and use the string compare to compare the computer and user choices and decide who wins, and then little things like play 3 rounds and allow the user to play again if he wants, but I can pretty much take care of that. However, as with most projects, I figured out the beginning and just when i get to the most important part I get stuck.

This is what I've gotten so far

#include <iostream>
#include <stdlib.h>
#include <string.h>
#include <cstdlib>

using namespace std;     

void main()
{
    //initialize variables for intro screen
    char yesOrno[10] = "";
    int checkLoop = 0;
    char roundnum[10]="";
    int validChoice=0;
    char playerPut[10]= "";
    int computerPut=0;

//while loop is set to different values to identify whether to repeat the intro
screen again or not
    while(checkLoop == 0){                   
    
//intro screen - ***** Just ignore all the cout stuff below this, I had it all set up and lined up to show the directions but when I pasted the code under here it messed up the spacing.

        cout << "                                                                            
" << endl;
        cout << "            Rock          Paper         Scissors                            
" << endl;
        cout << "
__________________________________________________________________________  " <<
endl;
        cout << "| This is a game of rock, paper, scissors. You will play three rounds     
| " << endl;
        cout << "|  against the computer. To pick either rock, paper, or scissors
simply    | " << endl;
        cout << "|  type in your choice and hit enter. The computer will randomly pick
its  | " << endl;
        cout << "|  choice. At the end of the game type y to play again & n to end the
game.| " << endl;
        cout << "|               Do you understand?  please enter y or n                   
| " << endl;
        cout <<
"|__________________________________________________________________________| "
<< endl; 
        
//The end of that messy screen


//user input
cin.getline(yesOrno, 10);
    
if((strcmp(yesOrno,"n")==0)||(strcmp(yesOrno,"y")==0))            //if the user input is
a y or n go into this other loop
    {    
        if(strcmp(yesOrno,"y")==0)
            {
                checkLoop=1;                                    
                system("CLS");                        
                cout<< "Get ready to start the game"<<endl;
                }
            else                                                //if the user input is no repeat the directions
            
            {
                system("CLS");
                cout<< "Read the directions again";
                checkLoop=0;                                    //makes this loop repeat until y or n entered
            }    
                }     
else
    { 
         system("CLS");            
         cout<< " Enter a y or n "<<endl;                        //if the user enters something other
than a y or n print this statement                                        
         cout<<endl;
         cout<<endl;    
         }}

system("CLS");

cout<<"Enter your choice"<<endl;
cin.getline(playerPut,20);

system("CLS");
    

while(validChoice==0)
{

if((strcmp(playerPut,"paper")==0)||(strcmp(playerPut,"rock")==0)||(strcmp(playerPut,"scissors")==0))
    { 
        validChoice=1;
        cout<< "Your choice was:"<<endl;
        cout<< playerPut<< endl;
        
        computerPut=rand()4%;
        
//and this right here is pretty much where I got stuck, but i attempted to slowly drudge on    
        
if(strcmp(playerPut,"paper")==3)

            cout<< "works"<< endl;
                     
        }        
    }
    else
    {
        system("CLS");
        cout<<"Not a valid choice."<< endl;
        validChoice=0;
        }
     
}


    
}

Any suggestions that would help me fix this up with be greatly appreciated..