super simple shell

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/wait.h>


/**
 * exe - execute the cmd
 * @str: string that contains the cmd
 */
void exe(char str[])
{
    char *cmd;
    const char del[] = " \t\r\n\v\f";
    char *token;

    cmd = strdup(str);

    /* get the first token */
    token = strtok(cmd, del);

    if (token != NULL)
    {
        char *av[] = {token, NULL}; /* set av[0] in the token */

            if (execve(av[0], av, NULL) == -1)
            {
                perror("Error");
            }
    }
}

/**
 * main - a super simple shell that can run commands with their full path,
 *        without any argument.
 *
 * Return: 0 success
 */

int main(void)
{
    size_t size = 100;
    char *cmd;

    /*system("clear");  clear screen */
    printf("press Ctrl + D to exit\n");

    while (1) /* allows the loop to run indefinitely */
    {
        cmd = (char *)malloc(size * sizeof(cmd)); /* set memory space for cmd */
        if (cmd == NULL)
        {
            exit(-1);
        }

        printf("SHELL >> ");

        /* if it throws error, it frees memory and ends */
        if (getline(&cmd, &size, stdin) == -1)/* get command entered in console */
        {
            free(cmd);
            putchar(10);
            exit(-1);
        }

        /* create the child process and send the command to execute */
        pid_t pid = fork();

        if (!pid)
        {
            exe(cmd);
            break;
        }
        else
            wait(NULL);
        free(cmd);
    }
    return (0);
}