Is there anyway to generate character space(32) to ~(126) using sodium.h ? Or other way to generate secure string?

I am creating a C program to generate passwords.

rand() in C keep generating some same set of strings even using srand((unsigned int)**main + (unsigned int)&argc + (unsigned int)time(NULL)) found in here but better than using srand(time(NULL))

I found this answer, and I finally know how to link libsodium to my project.

After that, I realise I only can set the upper bound for randombytes_uniform(), the lower bound is always 0.

And using randombytes_random() give me all kind of characters that cannot use in password.

Can anyone know how to generate character space(32) to character ~(126) using sodium or any secure way to generate character?

Here is the original code:

#include <stdio.h>
#include <stdlib.h>
#include "sodium.h"
#pragma warning (disable:4996)

void main(int argc, char **argv){

    /* Length of the password */
    int length, num, temp, number;
    num = 10;
    length = 10;
    number = num;

    clear_screen();

    /* Seed number for rand() */
    srand((unsigned int)**generate_standard_password + (unsigned int)&argc + (unsigned int)time(0));

    while (num--)
    {
        temp = length;
        printf("\n\t%2d. ", (number - num));
        while (temp--) {
            putchar(rand() % 56 + 65);
            srand(rand());
        }
        temp = length;
    }
    printf("\n\n\t");
    system_pause();
}

Thanks in advance.