C++ Help Why wont it print anything (functions)

[jedteoh23]

\\this program is used for the user enter a number and guess the correct number where the int jackpot is the function and analyzes it.It debugs and all but it wont work help please.Im new to programming.
#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;
using std::srand;
using std::time;
using std::rand;


int jackpot(int a){

srand((unsigned int)time(0));
int loop;
int rand1 =rand() % 100 +1;
for(loop=0;a==rand1;loop++){
cout<<"Enter a number:";
cin>>a;
if(a<rand1)
{cout<<"Its too low ";
}
else if(a>rand1){cout<<"Its to high";
}}

cout<<"You have tried"<<loop<<"\n";
cout<<"Congratulations";


}

int main ()
{
cout<<"Hello,Please enter your 3 bets\n";
int guess1;
cout<<"Please enter your 1st bet:\n";
cin>>guess1;

int jackpot(guess1);

return 0;
}