Random Help

I'm making a little program for D&D combat, and I am in need of an random function for making integer...

#include <cstdlib>
#include <ctime>
#include <iostream>

using namespace std;

int RandInt(int a,int b)
{
     srand(time(0));  
     return a + rand() % (b - a + 1);
}

int x = RandInt(1,6);

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I'm using this function, but the problem is that during one executing it alway displays the same value, in order to change the value i have to re-run the program, and it is not acceptable,so plz help me...

 

Jesus, does nobody know this... c'mon guys, I really need help...

 

#include <stdio.h>
#include <stdlib.h>

int main(void) {
        int random_number;

        srand(time(0));
        random_number = rand();
        printf("%d\n", random_number);

        return 0;
}

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