gistfile1.c

void fibo_command(int n, char *argv[]) {
    int i = 0;
    int first = 0;
    int second = 1;
    int result;

    fio_printf(1, "\r\n");

    if(n == 1) {
        fio_printf(1, "Please assign a number \r\n");
        return;
    }

    for(i=0; i <= atoi(argv[1]); i++ ) {
        if( i <= 1)
            result = i;
        else 
        {
            result = first + second;
            first = second;
            second = result;
        }
    }
    fio_printf(1, "The %dth fibonacci number is:%d\r\n",atoi(argv[1]), result);

}
int atoi(char * str)
{
    int result = 0;
    while(*str != 0)
    {
        int c = *str - '0';
        result = result * 10 + c;
        str++;
    }
    
    return result;
}