How to generate 5 random numbers in C? [duplicate]

This question already has an answer here:

• How do I get a specific range of numbers from rand()? 13 answers
• How to generate a random number from within a range 10 answers

I need to generate 5 random numbers in a range between -10 and +10. How could I do this? I've seen that one can use shuffle, malloc or even realloc, but because Iam new to C, I do not quite understand how I can make it work. If anyone can help me, I'll be grateful.

The only part of my code, it's only that I have created the array with size 5, so that I can then try to generate the random numbers.

include <stdio.h>
include <stdlib.h>
include <locale.h>

int main() {

setlocale(LC_ALL,"portuguese");

  int num[5]// this will be the variable that I will use to generate random numbers.
  int positive;
  int negative;

return 0;

}

After generating the 5 random numbers, I need to check if they are positive or negative, I created a part of the code already, don't know if will work :

if(num[i] > 0) {
    positive += 1;
}
else if(num[i] < 0 ) {
    negative += 1;
}

printf("\nPositive(s) : %d ",positive);
printf("Negative(s) : %d ",negative);

How can I make all this work, by generating the 5 numbers and checking them out ?