Randomizing the seed value C++ [duplicate]

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• Recommended way to initialize srand? 14 answers

I have a class function int ComputerClass::getGuess() that every time it is called should produce a randomized number. In my main function I created 2 functions of the class ComputerClass Computer1,Computer2 and called the class function, however it returns the same number for each call:cout << Computer1.getGuess()<<endl; cout << Computer2.getGuess()<<endl;

Below is the class member function

`
int ComputerClass::getGuess()
{
//Generate randomn number
srand(time(NULL));
generatednumber = rand() % 100 + 1;

//return computers randomly generated #
cout <<"--(Computer)Please enter a guess between 1-100: "<< 
generatednumber<<endl;

return generatednumber;
}`

I'm assuming my issue is the seed value, however I don't know how to set it up so that makes the number random every time it is called.